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2. Status of x-ray imaging and spectroscopy mission (XRISM)

Author

Yutaka Fujita, Koji Mukai, Peter Shirron, Kumiko K. Nobukawa, Toshiaki Takeshima, Isamu Hatsukade, Richard F. Mushotzky, Brian J. Williams, Greg Brown, Hirofumi Noda, Brian Comber, Maria Diaz-Trigo, Manabu Ishida, Brian R. McNamara, Takahiro Sasaki, M. Ohno, Iurii Babyk, Richard L. Kelley, Sayuri Iga, Hiroshi Nakajima, Yuusuke Uchida, Hiroya Yamaguchi, Caroline A. Kilbourne, Takeshi Go Tsuru, Kosuke Sato, Tsunefumi Mizuno, Ryo Iizuka, Irina Zhuravleva, Shogo B. Kobayashi, Hironori Matsumoto, Matthew Holland, K. Matsuzaki, Makoto Sawada, Laura Brenneman, Susumu Yasuda, Shinya Yamada, Makoto Tashiro, Hirokazu Odaka, Yoshihiro Ueda, Keiichi Yanagase, Hiroki Akamatsu, Yasuharu Sugawara, Akihiro Furuzawa, Nobutaka Bando, Akio Hoshino, Koji Mori, Misaki Mizumoto, Lia Corrales, Katsuhiro Hayashi, Yasushi Fukazawa, Hideki Uchiyama, Hironori Maejima, Robert Petre, Yoshitaka Ishisaki, Teruaki Enoto, Mina Ogawa, Kenichi Toda, Natalie Hell, Shin'ichiro Uno, Tessei Yoshida, Thomas G. Bialas, Maurice A. Leutenegger, Masayuki Ohta, Yang Soong, Elisa Costantini, Kenji Hamaguchi, Shunji Kitamoto, Takafumi Horiuchi, Leslie Hartz, Luigi C. Gallo, Edmund Hodges-Kluck, Renata Cumbee, Yusuke Nishioka, Toshiki Sato, Paul P. Plucinsky, Katja Pottschmidt, Aya Kubota, Ehud Behar, Tom Lockard, Masanobu Ozaki, Kenji Minesugi, Ann Hornschemeier, T. R. Jaffe, Aurora Simionescu, Kazutaka Yamaoka, Stéphane Paltani, Keisuke Tamura, Chris Done, Makoto Yamauchi, Kouichi Hagino, Kosei Ishimura, Akihide Kobayashi, Eric J. Miller, Carlo Ferrigno, Hiromitsu Takahashi, Hiromi Seta, Nathalie Gorter, Cor P. de Vries, Michael J. Sampson, A. E. Szymkowiak, Mark O. Kimball, Gary A. Sneiderman, Dan McCammon, Meng P. Chiao, S. Eguchi, Randall K. Smith, Naoki Ishihama, Yohko Tsuboi, Jon M. Miller, Erin Kara, Takayoshi Kohmura, Timothy R. Kallman, Takashi Okajima, Kenichiro Nigo, Jan-Willem den Herder, Shigeo Yamauchi, Kazunori Someya, Maxim Markevitch, Yuto Ichinohe, M. C. Witthoeft, Yukikatsu Terada, Nasa Yoshioka, Edgar Canavan, Jelle Kaastra, Takao Kitaguchi, Masahiro Tsujimoto, Hideto Nakamura, Shinji Mitani, Hiroyuki Uchida, Masayoshi Nobukawa, R. Sato, Atsushi Tanimoto, Junko S. Hiraga, Keisuke Shinozaki, Yuichiro Ezoe, Hiroshi Tsunemi, Brian McLaughlin, Yasuko Shibano, Ikuyuki Mitsuishi, Matteo Guainazzi, Lillian Reichenthal, Yuichi Terashima, Kumi Ishikawa, Naomi Ota, Chikara Natsukari, Joseph Miko, Kiyoshi Hayashida, M. Loewenstein, Connor Martz, Tahir Yaqoob, D. Eckert, Ryuichi Fujimoto, Johannes Dercksen, Hiroshi Murakami, Hiroshi Tomida, Ken Ebisawa, Rob Wolfs, Martin Grim, Tomomi Watanabe, Marc Audard, Keisuke Sugawara, Yoh Takei, Megan E. Eckart, Takaya Ohashi, Atsushi Okamoto, Noriko Y. Yamasaki, Shin Watanabe, Yoshitomo Maeda, Shuhei Shigeto, Yoshitaka Arai, Maki Shida, Hisamitsu Awaki, Muzi Li, Takaaki Tanaka, Tadayasu Dotani, David Hawthorn, Jacco Vink, Joy Henegar-Leon, Rozenn Boissay-Malaquin, Kazuhiro Nakazawa, Aya Bamba, Megumi Shidatsu, Satoru Katsuda, Liyi Gu, Kyoko Matsushita, Toru Tamagawa, F. Scott Porter, Michael J. DiPirro, Steven Kenyon, and High Energy Astrophys. & Astropart. Phys (API, FNWI)

Subjects
Sun sensor, Cardinal point, Spacecraft, Robustness (computer science), Computer science, business.industry, Survivability, Control reconfiguration, Field of view, Aerospace engineering, business, Fault detection and isolation
Abstract

The X-Ray Imaging and Spectroscopy Mission (XRISM) is the successor to the 2016 Hitomi mission that ended prematurely. Like Hitomi, the primary science goals are to examine astrophysical problems with precise highresolution X-ray spectroscopy. XRISM promises to discover new horizons in X-ray astronomy. XRISM carries a 6 x 6 pixelized X-ray micro-calorimeter on the focal plane of an X-ray mirror assembly and a co-aligned X-ray CCD camera that covers the same energy band over a large field of view. XRISM utilizes Hitomi heritage, but all designs were reviewed. The attitude and orbit control system were improved in hardware and software. The number of star sensors were increased from two to three to improve coverage and robustness in onboard attitude determination and to obtain a wider field of view sun sensor. The fault detection, isolation, and reconfiguration (FDIR) system was carefully examined and reconfigured. Together with a planned increase of ground support stations, the survivability of the spacecraft is significantly improved.

Published
2020

3. Vibration isolation system for cryocoolers of soft x-ray spectrometer on-board ASTRO-H (Hitomi)

Author

Hiroyuki Sugita, Shinya Yamada, Yasuo Nakamura, Kenji Minesugi, Shoji Tsunematsu, Chikara Natsukari, Kiyomi Otsuka, Taro Kawano, Susumu Yasuda, Dan McCammon, Motohide Kokubun, Kazuhisa Mitsuda, Seiji Yoshida, Makoto Sawada, Meng P. Chiao, Yoh Takei, John Basile, Atsushi Wada, Ryuichi Fujimoto, Yoichi Sato, Naoko Iwata, Mina Ogawa, Atsushi Okamoto, Paul Wilke, Katsuhiro Narasaki, Shingo Obara, Caroline A. Kilbourne, James Pontius, F. Scott Porter, Gary A. Sneiderman, Tadayuki Takahashi, Megan E. Eckart, Noriko Y. Yamasaki, Kosei Ishimura, and Kenichi Kanao

Subjects
Materials science, Physics::Instrumentation and Detectors, microcalorimeter, 01 natural sciences, 010309 optics, soft x-ray spectrometer, 0103 physical sciences, microvibration, cryocooler, Aerospace engineering, 010306 general physics, Instrumentation, Soft x ray, Spectrometer, Spacecraft, business.industry, Mechanical Engineering, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Cryocooler, vibration isolation, Electronic, Optical and Magnetic Materials, Vibration, Vibration isolation, Hitomi, Space and Planetary Science, Control and Systems Engineering, business, Frequency modulation
Abstract

著者人数: 35名, 形態: カラー図版あり, Number of authors: 35, Physical characteristics: Original contains color illustrations, Accepted: 2018-01-22, 資料番号: PA1810022000

Published
2018

6. Enhancement of surge-induced synchronized switch harvesting on inductor strategy

Author

Seong-Cheol Kwon, Kenji Minesugi, Junjiro Onoda, and Hyun-Ung Oh

Subjects
Materials science, business.industry, Surge voltage, Electrical engineering, Condensed Matter Physics, Inductor, Piezoelectricity, Atomic and Molecular Physics, and Optics, Hardware_GENERAL, Mechanics of Materials, Signal Processing, General Materials Science, Electrical and Electronic Engineering, Surge, business, Energy harvesting, Civil and Structural Engineering
Abstract

We propose and demonstrate a novel method to enhance vibration harvesting based on surge-induced synchronized switch harvesting on inductor (S3HI). S3HI allows harvesting of a large amount of energy even from low-amplitude vibrations by inducing a surge voltage during the voltage inversion of a synchronized switch harvesting on inductor (SSHI). The surge voltage and the voltage amplification from the conventional voltage inversion improve energy harvesting. S3HI modifies SSHI by both rewiring the circuit without adding components and using a novel switching pattern for voltage inversion, thus maintaining the simplicity of SSHI. We propose a novel switching strategy and circuit topology and analyze six methods that constitute the S3HI family, which includes traditional S3HI and high-frequency S3HI. We demonstrate that the six methods suitably harvest energy even from low-amplitude vibrations. Nevertheless, the harvestable energy per vibration cycle depends on the switching pattern and storage-capacitor voltage. The use of the proposed switching strategy, which allows energy harvesting before energy-dissipative voltage inversion, substantially increases the harvestable energy per vibration cycle. In the typical case considered in this study, the said increase is on the order of 11%–31% and 15%–450% compared to the traditional and existing high-frequency S3HI methods, respectively, depending on the storage-capacitor voltage. Additionally, the proposed circuit can be used as a traditional circuit. It could be considered a promising alternative to S3HI methods owing to its potential auto-reboot capability, which is not found in traditional S3HI circuit.

Published
2021

7. Optimal configuration and combination of piezoelectric transducer and inductor for synchronized-switch-damping-on-an-inductor technique

Author

Kenji Minesugi, Shigeru Shimose, and Junjiro Onoda

Subjects
Engineering, business.industry, Mechanical Engineering, Acoustics, 02 engineering and technology, 021001 nanoscience & nanotechnology, Inductor, 01 natural sciences, Piezoelectricity, Transducer, 0103 physical sciences, PMUT, Electronic engineering, General Materials Science, 0210 nano-technology, business, 010301 acoustics
Abstract

This article describes the optimal configuration and combination of piezoelectric transducers and inductors for the synchronized-switch-damping-on-an-inductor technique. The technique suppresses structural vibrations by inverting the polarity of the electric voltage in a piezoelectric transducer using a switched inductive shunt circuit at each displacement extremum. The energy dissipation rate of synchronized switch damping on an inductor depends on the impedances of the transducer and the inductor in the circuit, especially the resistive component, in this inversion. For this study, mathematical models of the equivalent resistances of transducers and inductors for this inversion phenomenon were formulated based on experiments with various transducers and inductors. Using these models, the optimal ratio of the thickness–area of patch-type piezoelectric transducers and that of the length–cross-sectional area of the lead of the inductors were analytically obtained. The optimization of series–parallel connections of multiple transducers and inductors was also shown to be equivalent to this one. The optimal mass budget allocation for the transducers and inductors was also formulated. Two examples of optimization, involving an increase in energy dissipation rates by a factor of 4, were presented. The examples showed that the time taken to suppress free vibrations in a clamped beam was reduced to half through the optimization.

Published
2016

8. Concept of the X-ray Astronomy Recovery Mission

Author

Shinya Yamada, Laura Brenneman, Yang Soong, Eric J. Miller, Kyoko Matsushita, Katja Pottschmidt, Johannes Dercksen, Hiromi Seta, Toru Tamagawa, Keiichi Matsuzaki, Yukikatsu Terada, Edgar Canavan, Rie Sato, F. Scott Porter, Hiroshi Murakami, Yoh Takei, Kimberly D. Brown, Michael J. DiPirro, Steven Kenyon, Hiroshi Tomida, Timothy R. Kallman, Richard L. Kelley, Atsushi Okamoto, Rob Wolfs, Matteo Guainazzi, Shinya Nakashima, Kenji Hamaguchi, Shin Watanabe, Lorella Angelini, Takayoshi Kohmura, Brian R. McNamara, Thomas G. Bialas, Megumi Shidatsu, Kumi Ishikawa, Aya Kubota, Takayuki Tamura, Jon M. Miller, Mark O. Kimball, Gary A. Sneiderman, Joseph Bonafede, Yoshitaka Arai, Kosei Ishimura, Mina Ogawa, A. E. Szymkowiak, Hiroshi Nakajima, Kenichi Toda, Steve Graham, Takao Kitaguchi, Makoto Sawada, Tom Lockard, Erin Kara, Yutaka Fujita, Dean Hawes, Shin'ichiro Uno, Hideyuki Mori, Kenichiro Nigo, Jan-Willem den Herder, Randall K. Smith, Luigi C. Gallo, Chikara Natsukari, Hideto Nakamura, Makoto Yamauchi, Michitaka Onizuka, Yoshitaka Ishisaki, Thomas Walsh, Koji Mori, Peter Barfknecht, Kazuhiro Nakazawa, Maria Diaz-Trigo, Manabu Ishida, Makoto Tashiro, Hiromitsu Takahashi, Satoru Katsuda, Cor P. de Vries, M. Ohno, Zhuravleva Irina, Meng P. Chiao, Aurora Simionescu, Kim Barnstable, Cailey Hegarty, Aya Bamba, Naomi Ota, Joseph Miko, M. Loewenstein, Connor Martz, Hirokazu Odaka, Ann Hornschemeier, Carlo Ferrigno, Edmund Hodges-Kluck, B. Blagojević, Liyi Gu, Masanobu Ozaki, Kenji Minesugi, Kazunori Someya, Kumiko K. Nobukawa, Junko S. Hiraga, Hiroya Yamaguchi, Shogo B. Kobayashi, Greg Brown, C. Brambora, Hiroyuki Uchida, Richard F. Mushotzky, Peter Shirron, Chris Done, Dan McCammon, Natalie Hell, Laura A. Burns, Kazunori Ishibashi, Brian J. Williams, Jaime Zabala, Brian Comber, Hironori Matsumoto, Matthew Holland, Teruaki Enoto, Stéphane Paltani, Yusuke Nishioka, Tim Carnahan, Masahiro Tsujimoto, Takayuki Hayashi, Lurli Babyk, Maki Shida, Ken Shelton, Isamu Hatsukade, Takeshi Go Tsuru, Kosuke Sato, Yoshihiro Ueda, Caroline A. Kilbourne, Yasuharu Suagawara, Tsunefumi Mizuno, Susumu Yasuda, S. Koyama, Hironori Maejima, Lia Corrales, Masayoshi Nobukawa, Yoshitomo Maeda, Yasushi Fukazawa, Hisamitsu Awaki, Takaaki Tanaka, Tadayasu Dotani, Megan E. Eckart, Takaya Ohashi, J. V. Lobell, Hiroshi Tsunemi, Ikuyuki Mitsuishi, Noriko Y. Yamasaki, Hirofumi Noda, Lillian Reichenthal, Yuichi Terashima, Kiyoshi Hayashida, Lynette Marbley, Tahir Yaqoob, Ryuichi Fujimoto, Ken Ebisawa, Kohichi Hagino, Martin Grim, Bryan L. James, Yohko Tsuboi, Shigeo Yamauchi, Maxim Markevitch, Yuto Ichinohe, Tyrone DIllard, Nasa Yoshioka, Akio Hoshino, Hideki Uchiyama, Shunji Kitamoto, Paul P. Plucinsky, Mark Edison, Yuichiro Ezoe, Yasuko Shibano, Koji Mukai, Michael R. Wright, Ryo Iizuka, Masayuki Ohta, Keiichi Yanagase, Hiroki Akamatsu, Robert Petre, Elisa Costantini, Kazutaka Yamaoka, Maurice A. Leutenegger, Takashi Okajima, and Akihiro Furuzawa

Subjects
X-ray astronomy, Attitude control system, COSMIC cancer database, 010308 nuclear & particles physics, business.industry, Computer science, Energy transfer, media_common.quotation_subject, High resolution, Field of view, 01 natural sciences, Universe, 0103 physical sciences, Aerospace engineering, business, 010303 astronomy & astrophysics, Event (particle physics), media_common
Abstract

The ASTRO-H mission was designed and developed through an international collaboration of JAXA, NASA, ESA, and the CSA. It was successfully launched on February 17, 2016, and then named Hitomi. During the in-orbit verification phase, the on-board observational instruments functioned as expected. The intricate coolant and refrigeration systems for soft X-ray spectrometer (SXS, a quantum micro-calorimeter) and soft X-ray imager (SXI, an X-ray CCD) also functioned as expected. However, on March 26, 2016, operations were prematurely terminated by a series of abnormal events and mishaps triggered by the attitude control system. These errors led to a fatal event: the loss of the solar panels on the Hitomi mission. The X-ray Astronomy Recovery Mission (or, XARM) is proposed to regain the key scientific advances anticipated by the international collaboration behind Hitomi. XARM will recover this science in the shortest time possible by focusing on one of the main science goals of Hitomi,“Resolving astrophysical problems by precise high-resolution X-ray spectroscopy”.1 This decision was reached after evaluating the performance of the instruments aboard Hitomi and the mission’s initial scientific results, and considering the landscape of planned international X-ray astrophysics missions in 2020’s and 2030’s. Hitomi opened the door to high-resolution spectroscopy in the X-ray universe. It revealed a number of discrepancies between new observational results and prior theoretical predictions. Yet, the resolution pioneered by Hitomi is also the key to answering these and other fundamental questions. The high spectral resolution realized by XARM will not offer mere refinements; rather, it will enable qualitative leaps in astrophysics and plasma physics. XARM has therefore been given a broad scientific charge: “Revealing material circulation and energy transfer in cosmic plasmas and elucidating evolution of cosmic structures and objects”. To fulfill this charge, four categories of science objectives that were defined for Hitomi will also be pursued by XARM; these include (1) Structure formation of the Universe and evolution of clusters of galaxies; (2) Circulation history of baryonic matters in the Universe; (3) Transport and circulation of energy in the Universe; (4) New science with unprecedented high resolution X-ray spectroscopy. In order to achieve these scientific objectives, XARM will carry a 6 × 6 pixelized X-ray micro-calorimeter on the focal plane of an X-ray mirror assembly, and an aligned X-ray CCD camera covering the same energy band and a wider field of view. This paper introduces the science objectives, mission concept, and observing plan of XARM.

Published
2018

9. Hitomi (ASTRO-H) X-ray Astronomy Satellite

Author

Laura Brenneman, Hironori Matsumoto, Kirk Gilmore, Takayuki Yuasa, D. Lumb, Manabu Ishida, Aurora Simionescu, Takao Nakagawa, Junichiro Katsuta, Esra Bulbul, Meng P. Chiao, Philippe Laurent, Jelle de Plaa, Hiroyuki Ogawa, Keith Arnaud, Keiji Ogi, John P. Doty, B. Ramsey, Yuzuru Tawara, C. Megan Urry, Eric D. Miller, Peter Shirron, Gregory V. Brown, Dan R. Wilkins, Hiroshi Tsunemi, Richard F. Mushotzky, Nobuyuki Kawai, Brian J. Williams, Steven W. Allen, Naoko Iyomoto, Taro Kawano, Katja Pottschmidt, Yang Soong, Tadayuki Takahashi, Yasuharu Sugawara, Ikuyuki Mitsuishi, Margherita Giustini, Greg Madejski, Tetsu Kitayama, Megumi Shidatsu, Hideyuki Mori, Łukasz Stawarz, Randall K. Smith, Satoshi Sugita, Norbert Schartel, James Pontius, Kazuhiro Nakazawa, Eugenio Ursino, Katsuhiro Hayashi, Toshio Nakano, Satoru Katsuda, Cor P. de Vries, Adam R. Foster, Masanobu Ozaki, Kenji Minesugi, Tomomi Watanabe, Yuichi Terashima, Christopher S. Reynolds, Hiroaki Sameshima, Alex Koujelev, Naohisa Anabuki, Isamu Hatsukade, Masaharu Nomachi, Yoichi Yatsu, Yasunobu Uchiyama, Steve O' Dell, Ann Hornschemeier, Akio Hoshino, Yasuo Tanaka, M. Pohl, Kyoko Matsushita, Masahiro Tsujimoto, Hideki Uchiyama, Mark O. Kimball, Arvind Parmar, Gary A. Sneiderman, Yoshiyuki Inoue, Toru Tamagawa, Yukikatsu Terada, Shinya Nakashima, Tsuneyoshi Kamae, Dmitry Khangulyan, Kiyoshi Hayashida, Rie Sato, Aya Bamba, Roger Blandford, Kazunori Ishibashi, Shinya Saito, Caroline A. Kilbourne, Toshio Murakami, Takeda Shin'ichiro, Missagh Mehdipour, Motohide Kokubun, Masachika Iwai, Dan McCammon, Michael J. DiPirro, Marshall W. Bautz, Shunji Kitamoto, Naomi Ota, Brian R. McNamara, Frits Paerels, Stéphane Paltani, Magnus Axelsson, Edgar Canavan, Nobutaka Bando, Peter J. Serlemitsos, Shu Koyama, Felix Aharonian, Matteo Guainazzi, Joseph Miko, Masayoshi Nobukawa, Thomas G. Bialas, Koji Mori, Makoto Yamauchi, Uno Shin'ichiro, Hirokazu Odaka, Toru Sasaki, Mina Ogawa, Philipp Azzarello, Atsushi Wada, Tsuyoshi Okazaki, Ken Ebisawa, Takeshi Go Tsuru, Yoshitomo Maeda, Jon M. Miller, A. L. King, Cynthia Simmons, Hirofumi Noda, Hiromitsu Takahashi, Kazuhisa Mitsuda, Carlo Ferrigno, Hiroyasu Tajima, Kazuo Makishima, Erin Kara, Fumie Akimoto, Shigeo Kawasaki, Kumi Ishikawa, Kosuke Sato, Hiroshi Nakajima, Knox S. Long, Jun Kataoka, Keisuke Shinozaki, Kazuyuki Hirose, Keisuke Tamura, Teruaki Enoto, Yoh Takei, Yoshito Haba, Shinya Yamada, Richard L. Kelley, Yoshihiro Ueda, Megan E. Eckart, Takaya Ohashi, Shin-ichiro Sakai, Kevin R. Boyce, D. Haas, Atsushi Okamoto, Kazuhiro Sakai, Ryo Nagino, Makoto Asai, Maurice A. Leutenegger, Michael Loewenstein, Daniel R. Wik, Yohko Tsuboi, Maria Chernyakova, Shiro Ueno, Koji Mukai, Hiroshi Murakami, Takeshi Nakamori, Hiroshi Tomida, Tahir Yaqoob, Norbert Werner, Paolo Coppi, Abderahmen Zoghbi, Shin Watanabe, Kosei Ishimura, Hideyo Kunieda, Candace Masters, Yusuke Nishioka, Shigeo Yamauchi, Maxim Markevitch, Yuto Ichinohe, Andrew C. Fabian, Ryuichi Fujimoto, Kenji Hamaguchi, Liyi Gu, Edward M. Cackett, Chris Done, Junko S. Hiraga, Chris Baluta, Noriko Y. Yamasaki, Maki Shida, Makoto Tashiro, Takanobu Shimada, Yasuyuki T. Tanaka, Massimiliano Galeazzi, Ilana M. Harrus, Naoko Iwata, Timothy R. Kallman, Takuya Miyazawa, Kumiko K. Nobukawa, Madoka Kawaharada, Hisamitsu Awaki, Takaaki Tanaka, Tadayasu Dotani, Goro Sato, Ciro Pinto, Hiroya Yamaguchi, Harvey Moseley, Yoshiharu Namba, Shutaro Ueda, Masayuki Itoh, Takayoshi Kohmura, Daisuke Yonetoku, Yoshitaka Ishisaki, Hans A. Krimm, Hiromi Seta, Atsumasa Yoshida, Kouichi Hagino, Yuichiro Ezoe, Samar Safi-Harb, John P. Hughes, Daniel Maier, Hajime Inoue, Lorella Angelini, Yasuko Shibano, Frederick S. Porter, Saori Konami, Takayuki Tamura, Shin Mineshige, Peter Kretschmar, Yoichi Sato, Helen Russell, Hiroyuki Uchida, Elisa Costantini, Chikara Natsukari, Housei Nagano, Jan-Willem den Herder, Francesco Tombesi, Jelle Kaastra, Daniel S. McGuinness, Masanori Ohno, Hiroyuki Sugita, Katsuji Koyama, Tsunefumi Mizuno, Theodore Muench, Shiu-Hang Lee, Poshak Gandhi, Yasushi Fukazawa, Stefan Funk, Luigi C. Gallo, Tatsuro Kosaka, Andrea Goldwurm, Ryo Iizuka, Masayuki Ohta, Kazutaka Yamaoka, Marc Audard, Makoto Sawada, Takashi Okajima, Franco Moroso, Akihiro Furuzawa, Aya Kubota, Chris Jewell, Olivier Limousin, Takayuki Hayashi, Takao Kitaguchi, Takahiro Yamada, Hiroki Akamatsu, Andrew Szymkowiak, Robert Petre, Irina Zhuravleva, Dublin Institute for Advanced Studies (DIAS), SRON Netherlands Institute for Space Research (SRON), Climate and Environmental Physics [Bern] (CEP), Physikalisches Institut [Bern], Universität Bern [Bern]-Universität Bern [Bern], Columbia Astrophysics Laboratory (CAL), Columbia University [New York], Stockholm University, Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), Stanford University [Stanford], AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Stanford University, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Universität Bern [Bern] (UNIBE)-Universität Bern [Bern] (UNIBE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Space operations, X-ray telescope, microcalorimeter, 01 natural sciences, x-ray astronomy, 010309 optics, gamma-ray astronomy, 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation, ComputingMilieux_MISCELLANEOUS, Remote sensing, [PHYS]Physics [physics], X-ray astronomy, Spacecraft, business.industry, Mechanical Engineering, Astronomy and Astrophysics, hard x-ray, Gamma-ray astronomy, First light, Electronic, Optical and Magnetic Materials, Spacecraft system, x-ray, Space and Planetary Science, Control and Systems Engineering, gamma ray, Satellite, business, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

著者人数: 270名（所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 高橋, 忠幸; 国分, 紀秀; 満田, 和久; Baluta, Chris; 坂東, 信尚; 堂谷, 忠靖; 海老沢, 研; 林, 克洋; 廣瀬, 和之; 飯塚, 亮; 石田, 学; 石川, 久美; 石村, 康生; 岩井, 将親; 岩田, 直子; 河野, 太郎; 川崎, 繁男; 小山, 志勇; 前田, 良知; 峯杉, 賢治; 中川, 貴雄; 夏苅, 権; 小川, 博之; 小川, 美奈; 太田, 方之; 岡崎, 健; 尾崎, 正伸; 坂井, 真一郎; 鮫島, 寛明; 佐藤, 悟郎; 佐藤, 理江; 柴野, 靖子; 志田, 真樹; 嶋田, 貴信; Simionescu, Aurora; 菅原, 泰晴; 竹井, 洋; 田村, 隆幸; 田中, 靖郎; 田代, 信; 冨田, 洋; 辻本, 匡弘; 上田, 周太朗; 上野, 史郎; 和田, 篤始; 渡辺, 伸; 山田, 隆弘; 山崎, 典子）, Number of authors: 270 (Affiliation. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS): Takahashi, Tadayuki; Kokubun, Motohide; Mitsuda, Kazuhisa; Baluta, Chris; Bando, Nobutaka; Dotani, Tadayasu; Ebisawa, Ken; Hayashi, Katsuhiro; Hirose, Kazuyuki; Iizuka, Ryo; Ishida, Manabu; Ishikawa, Kumi; Ishimura, Kosei; Iwai, Masachika; Iwata, Naoko; Kawano, Taro; Kawasaki, Shigeo; Koyama, Shu; Maeda, Yoshitomo; Minesugi, Kenji; Nakagawa, Takao; Natsukari, Chikara; Ogawa, Hiroyuki; Ogawa, Mina; Ohta, Masayuki; Okazaki, Tsuyoshi; Ozaki, Masanobu; Sakai, Shinichiro; Sameshima, Hiroaki; Sato, Goro; Sato, Rie; Shibano, Yasuko; Shida, Maki; Shimada, Takanobu; Simionescu, Aurora; Sugawara, Yasuharu; Takei, Yoh; Tamura, Takayuki; Tanaka, Yasuo; Tashiro, Makoto; Tomida, Hiroshi; Tsujimoto, Masahiro; Ueda, Shutaro; Ueno, Shiro; Wada, Atsushi; Watanabe, Shin; Yamada, Takahiro; Yamasaki, Noriko Y.), Accepted: 2018-02-05, 資料番号: SA1170333000

Published
2018

12. Vibration isolation system for cryocoolers of Soft X-ray Spectrometer (SXS) onboard ASTRO-H (Hitomi)

Author

F. Scott Porter, Shinya Yamada, Katsuhiro Narasaki, Caroline A. Kilbourne, Kenichi Kanao, Yasuo Nakamura, Shingo Obara, James Pontius, Atsushi Wada, Yoichi Sato, Chikara Natsukari, Hiroyuki Sugita, Paul Wilke, Gary A. Sneiderman, Seiji Yoshida, Kazuhisa Mitsuda, Kosei Ishimura, John Basile, Meng P. Chiao, Mina Ogawa, Naoko Iwata, Susumu Yasuda, Megan E. Eckart, Motohide Kokubun, Taro Kawano, Noriko Y. Yamasaki, Makoto Sawada, Shoji Tsunematsu, Tadayuki Takahashi, Kiyomi Otsuka, Yoh Takei, Atsushi Okamoto, Richard L. Kelley, Kenji Minesugi, Dan McCammon, and Ryuichi Fujimoto

Subjects
Soft x ray, Materials science, Spacecraft, Spectrometer, Physics::Instrumentation and Detectors, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Orbital mechanics, Cryocooler, 01 natural sciences, Nuclear magnetic resonance, Vibration isolation, Flight model, 0103 physical sciences, Aerospace engineering, 010306 general physics, business, 010303 astronomy & astrophysics
Abstract

Soft X-ray Spectrometer (SXS) onboard ASTRO-H (named Hitomi after launch) is a microcalorimeter-type spectrometer, installed in a dewar to be cooled at 50 mK. The energy resolution of the SXS engineering model suffered from micro-vibration from cryocoolers mounted on the dewar. This is mitigated for the flight model by introducing vibration isolation systems between the cryocoolers and the dewar. The detector performance of the flight model was verified before launch of the spacecraft in both ambient condition and thermal-vac condition, showing no detectable degradation in energy resolution. The in-orbit performance was also consistent with that on ground, indicating that the cryocoolers were not damaged by launch environment. The design and performance of the vibration isolation system along with the mechanism of how the micro-vibration could degrade the cryogenic detector is shown.

Published
2016

13. The ASTRO-H (Hitomi) x-ray astronomy satellite

Author

Yasuharu Sugawara, Luigi C. Gallo, Manabu Ishida, Hiroya Yamaguchi, Makoto Yamauchi, Hiromitsu Takahashi, Kazuhisa Mitsuda, Eric J. Miller, Ciro Pinto, Grzegorz Madejski, Meng P. Chiao, Yoshiharu Namba, Kumiko K. Nobukawa, Goro Sato, Harvey Moseley, Takayoshi Kohmura, Mina Ogawa, Greg Brown, Kevin R. Boyce, Missagh Mehdipour, Shutaro Ueda, Satoru Katsuda, Philipp Azzarello, Shin'ichiro Uno, Atsushi Wada, Takao Kitaguchi, Knox S. Long, Yohko Tsuboi, Nobutaka Bando, Shin-ichiro Sakai, Hajime Inoue, Masayuki Itoh, Kazuyuki Hirose, Norbert Werner, Fumie Akimoto, Timothy R. Kallman, Shigeo Yamauchi, Maxim Markevitch, Yuto Ichinohe, Naohisa Anabuki, Satoshi Sugita, Yoshiyuki Inoue, Olivier Limousin, Meg Urry, Kouichi Hagino, Akio Hoshino, Kumi Ishikawa, Cor P. de Vries, Teruaki Enoto, Yasuo Tanaka, M. Pohl, Masanobu Ozaki, Kenji Minesugi, Peter Shirron, Maurice A. Leutenegger, Koji Mori, Hideki Uchiyama, Yukikatsu Terada, D. Haas, Keith A. Arnaud, Masanori Ohno, Christopher S. Reynolds, Hiromi Seta, Yusuke Nishioka, Carlo Ferrigno, Edgar Canavan, Katsuji Koyama, Daniel R. Wik, Shunji Kitamoto, Keisuke Shinozaki, Katsuhiro Hayashi, Dan McCammon, David H. Lumb, Kyoko Matsushita, Hiroyuki Uchida, John P. Hughes, Daniel Maier, Lorella Angelini, Taro Kawano, Cynthia Simmons, Shiro Ueno, Koji Mukai, Abderahmen Zoghbi, Makoto Asai, Toru Tamagawa, Rie Sato, Keisuke Tamura, Yuzuru Tawara, Łukasz Stawarz, Motohide Kokubun, Hiroshi Murakami, Hiroshi Tomida, F. Scott Porter, Hiroshi Tsunemi, Ikuyuki Mitsuishi, Michael J. DiPirro, Richard F. Mushotzky, Nobuyuki Kawai, Brian J. Williams, Richard L. Kelley, Hirokazu Odaka, Matteo Guainazzi, Kazuo Makishima, Yuichiro Ezoe, Takahiro Yamada, Hiroki Akamatsu, Andrew Szymkowiak, Philippe Laurent, James Pontius, Yasunobu Uchiyama, Tetsu Kitayama, Megumi Shidatsu, Felix Aharonian, Shigeo Kawasaki, Takanobu Shimada, Laura Brenneman, Toru Sasaki, Isamu Hatsukade, A. L. King, Takuya Miyazawa, Toshio Nakano, Atsumasa Yoshida, Robert Petre, Shinya Yamada, Stéphane Paltani, Eugenio Ursino, Adam R. Foster, Takayuki Hayashi, Shiu-Hang Lee, Toshio Murakami, Chris Done, Takeshi Nakamori, Kazuhiro Sakai, Ryo Nagino, Yuichi Terashima, Caroline A. Kilbourne, Michael Loewenstein, Shin Mineshige, Peter Kretschmar, John P. Doty, Candace Masters, Yoichi Sato, Junko S. Hiraga, Magnus Axelsson, Kenji Hamaguchi, Marshall W. Bautz, Junichiro Katsuta, Hiroaki Sameshima, Ilana M. Harrus, Thomas G. Bialas, Elisa Costantini, Daniel S. McGuinness, Yoichi Yatsu, Kazutaka Yamaoka, Naoko Iwata, Mark O. Kimball, Arvind Parmar, Yasuko Shibano, Norbert Schartel, Helen Russell, Gary A. Sneiderman, Steve Allen, Kiyoshi Hayashida, Makoto Sawada, Megan E. Eckart, Takaya Ohashi, Dmitry Khangulyan, Kosei Ishimura, Tatsuro Kosaka, Andrea Goldwurm, Takashi Okajima, Hirofumi Noda, Franco Moroso, F. B. S. Paerels, Hiroyuki Sugita, Alex Koujelev, Masaharu Nomachi, Tomomi Watanabe, Marc Audard, Tsunefumi Mizuno, Hideyo Kunieda, Keiji Ogi, Akihiro Furuzawa, Brian D. Ramsey, Masayoshi Nobukawa, Shinya Saito, Poshak Gandhi, Yasushi Fukazawa, Liyi Gu, Peter J. Serlemitsos, Noriko Y. Yamasaki, Tsuyoshi Okazaki, Takeshi Go Tsuru, Kosuke Sato, Aya Kubota, Chris Jewell, Yoshitomo Maeda, Yoshihiro Ueda, Shinya Nakashima, Irina Zhuravleva, Andrew C. Fabian, Tahir Yaqoob, Housei Nagano, Erin Kara, Brian R. McNamara, Naomi Ota, Shu Koyama, Joseph Miko, Madoka Kawaharada, Hisamitsu Awaki, Steve O'Dell, Takaaki Tanaka, Hironori Matsumoto, Tadayasu Dotani, Ken Ebisawa, Dan R. Wilkins, Hiroyasu Tajima, Yasuyuki T. Tanaka, Massimiliano Galeazzi, Chikara Natsukari, Jan-Willem den Herder, Tadayuki Takahashi, Francois Lebrun, Hiroshi Nakajima, Yoh Takei, Hideyuki Mori, Yoshito Haba, Jun Kataoka, Randall K. Smith, Atsushi Okamoto, Maria Chernyakova, Shin Watanabe, Edward M. Cackett, Shin'ichiro Takeda, Takayuki Tamura, Francesco Tombesi, Jelle Kaastra, Maki Shida, Chris Baluta, Kirk Gilmore, Aurora Simionescu, Ann Hornschemeier, Kazuhiro Nakazawa, Jelle de Plaa, Naoko Iyomoto, Atsushi Harayama, Aya Bamba, Katja Pottschmidt, Roger Blandford, Kazunori Ishibashi, Makoto Tashiro, Esra Bulbul, Yang Soong, Paolo De Coppi, Daisuke Yonetoku, Yoshitaka Ishisaki, Hans A. Krimm, Samar Safi-Harb, Masahiro Tsujimoto, Ryuichi Fujimoto, Takao Nakagawa, Hiroyuki Ogawa, Margherita Giustini, Tuneyoshi Kamae, Takayuki Yuasa, Ryo Iizuka, Masayuki Ohta, Jon M. Miller, and Theodore Muench

Subjects
Physics, X-ray astronomy, Spacecraft, business.industry, Astronomy, High resolution, First light, Gamma-ray astronomy, 01 natural sciences, Spacecraft system, Settore FIS/05 - Astronomia e Astrofisica, 0103 physical sciences, Satellite, 010306 general physics, business, 010303 astronomy & astrophysics
Abstract

The Hitomi (ASTRO-H) mission is the sixth Japanese X-ray astronomy satellite developed by a large international collaboration, including Japan, USA, Canada, and Europe. The mission aimed to provide the highest energy resolution ever achieved at E > 2 keV, using a microcalorimeter instrument, and to cover a wide energy range spanning four decades in energy from soft X-rays to gamma-rays. After a successful launch on 2016 February 17, the spacecraft lost its function on 2016 March 26, but the commissioning phase for about a month provided valuable information on the on-board instruments and the spacecraft system, including astrophysical results obtained from first light observations. The paper describes the Hitomi (ASTRO-H) mission, its capabilities, the initial operation, and the instruments/spacecraft performances confirmed during the commissioning operations for about a month.

Published
2016

14. Assessment of Electrical Influence of Multiple Piezoelectric Transducers' Connection on Actual Satellite Vibration Suppression

Author

Junjiro Onoda, Kanjuro Makihara, Kenji Minesugi, and Shigeru Shimose

Subjects
Vibration, Inductance, Engineering, Transducer, Article Subject, Piezoelectric accelerometer, Piezoelectric motor, business.industry, Electronic engineering, PMUT, business, Piezoelectricity, Electronic circuit
Abstract

We conduct comprehensive investigation of a semiactive vibration suppression method using piezoelectric transducers attached to structures. In our system, piezoelectric transducers are connected to an electric circuit composed of the diodes, an inductance, and a selective switch. Our method (SSDI) makes better use of counterelectromotive force to suppress the vibration, instead of simple dissipation of vibration energy. We use an actual artificial satellite to verify their high performance compared to conventional semi-active methods. As a consequence, we demonstrate that our semi-active switching method can suppress the vibration of the real artificial satellite to as much as 50% amplitude reduction. In our experiment, we reveal that the suppression performance depends on how multiple piezoelectric transducers are connected, namely, their series or parallel connection. We draw two major conclusions from theoretical analysis and experiment, for constructing effective semi-active controller using piezoelectric transducers. This paper clearly proves that the performance of the method is the connection (series or parallel) of multiple piezoelectric transducers and the their resistances dependent on frequency.

Published
2011

15. Proposal of Vibration Suppression Model Using Thin Film with Viscous Lamina

Author

Naoyuki Watanabe, Kenji Minesugi, Junjiro Onoda, and Hiroshi Okubo

Subjects
chemistry.chemical_classification, Lamina, Materials science, business.industry, Mechanics, Polymer, Structural engineering, Viscoelasticity, Vibration, chemistry, Adhesive, Thin film, business, Layer (electronics)
Abstract

Passive damping augmentation is one of attractive methods for vibration suppression to various kinds of structures because it is definitely stable and generally simple. Using viscous adhesive indicated a remarkable effect to the vibration suppression in the practical application to a satellite. In this paper, mathematical model of thin viscous adhesive layer using non-linear elements has been proposed. In this model, the characteristics of elements are correlated with non-linear internal phenomena of polymer. The simulation results using this proposal model are good agreement with experimental ones.

Published
2011

16. The Hinode X-Ray Telescope (XRT): Camera Design, Performance and Operations

Author

M. A. Weber, Kazuyoshi Kumagai, Kenji Minesugi, J. Cirtain, Hirohisa Hara, K. Matsuzaki, Ryohei Kano, Saku Tsuneta, Taro Sakao, David Caldwell, E. Dennis, Kiyoto Shibasaki, Edward E. DeLuca, Leon Golub, Masumi Shimojo, Peter Cheimets, Jay A. Bookbinder, and T. Kent

Subjects
Physics, Spacecraft, Pixel, business.industry, Sun: corona, Astronomy and Astrophysics, Field of view, X-ray telescope, computer.file_format, JPEG, Data processing system, law.invention, Telescope, Optics, Space and Planetary Science, law, business, computer, Sun: X-rays, Remote sensing, Flare
Abstract

The X-ray Telescope (XRT) aboard the Hinode satellite is a grazing incidence X-ray imager equipped with a 2048×2048 CCD. The XRT has 1 arcsec pixels with a wide field of view of 34×34 arcmin. It is sensitive to plasmas with a wide temperature range from < 1 to 30 MK, allowing us to obtain TRACE-like low-temperature images as well as Yohkoh/SXT-like high-temperature images. The spacecraft Mission Data Processor (MDP) controls the XRT through sequence tables with versatile autonomous functions such as exposure control, region-of-interest tracking, flare detection, and flare location identification. Data are compressed either with DPCM or JPEG, depending on the purpose. This results in higher cadence and/or wider field of view for a given telemetry bandwidth. With a focus adjust mechanism, a higher resolution of Gaussian focus may be available on-axis. This paper follows the first instrument paper for the XRT (Golub et al., Solar Phys. 243, 63, 2007) and discusses the design and measured performance of the X-ray CCD camera for the XRT and its control system with the MDP.

Published
2008

17. The Hinode (Solar-B) Mission: An Overview

Author

Masumi Shimojo, George A. Doschek, Takashi Watanabe, Sumitaka Tachikawa, Kiyoshi Ichimoto, L. D. Hill, Taro Sakao, Kenji Minesugi, Leon Golub, Shigenobu Shimada, Louise K. Harra, Yoshinori Suematsu, Akira Ohnishi, Tatsuaki Hashimoto, Y. Sone, Hirohisa Hara, T. Yamada, Saku Tsuneta, Toshifumi Shimizu, A. M. Title, J. L. Culhane, Takeo Kosugi, John M. Davis, K. Matsuzaki, and J. K. Owens

Subjects
Physics, Astronautics, business.industry, Payload, Astronomy and Astrophysics, X-ray telescope, Space exploration, law.invention, Telescope, Space and Planetary Science, Observatory, law, Satellite, Aerospace engineering, business, Aerospace, Remote sensing
Abstract

著者人数：25名, Accepted: 2007-07-30, 資料番号: SA1000203000

Published
2007

18. Using tuned electrical resonance to enhance bang-bang vibration control

Author

Kanjuro Makihara, Junjiro Onoda, and Kenji Minesugi

Subjects
Physics::General Physics, Engineering, business.industry, Vibration control, Aerospace Engineering, Resonance, Physics::History of Physics, Vibration, General Relativity and Quantum Cosmology, Physics::Popular Physics, Control theory, Electronic engineering, Bang–bang control, business, Actuator, Logic Control, Electrical resonance, Voltage
Abstract

Accepted: 2006-11-07, 資料番号: SA1000003000

Published
2007

19. HIGH-POWERED NON-LINEAR SHOCK DAMPER USING ER FLUID

Author

Kenji Minesugi, Kanjuro Makihara, and Junjiro Onoda

Subjects
Physics, business.industry, Attenuation, General Medicine, Structural engineering, Mechanics, Critical value, Damper, Electrorheological fluid, law.invention, Shock (mechanics), Ignition system, Shock absorber, Acceleration, law, business
Abstract

We developed the novel control logic for a shock damper using particle-dispersion Electro-Rheological (ER) fluid. This is a high-powered means of shock attenuation for satellite instruments that are subjected to lift-off shock or pyrodevice ignition shock. The proposed method attenuates the shock so that the instrument's acceleration does not exceed the critical value, even when the shock is too large to be accepted. In contrast to the conventional linear shock controls, the proposed shock control does not attempt to attenuate a small shock in order to prepare for attenuating a coming large shock.

Published
2007

20. A technique to evaluate on-orbit thermal deformation for large precise structures in ASTRO-H

Author

Kentaro Tanaka, Kenji Minesugi, Kuniyuki Omagari, Taro Kawano, and Kosei Ishimura

Subjects
Accuracy and precision, Materials science, Computer simulation, business.industry, Thermal vacuum chamber, Thermal, Astrophysics::Instrumentation and Methods for Astrophysics, Orbit (dynamics), Satellite, Aerospace engineering, business, Finite element method, Test data
Abstract

ASTRO-H is a next-generation X-ray observatory satellite planned for launch in fiscal 2015. Because ASTRO-H is a large structure and requires precise and accurate pointing, an understanding of on-orbit thermal deformation behavior is particularly important to the success of the ASTRO-H mission. In the conventional technique for predicting thermal deformation, testing is performed in a thermal vacuum chamber so asto simulate the temperature distribution on orbit. However, when using this conventional technique it is difficult to observe the detailed characteristics of the tested structures due to the limits of the applied temperature distribution cases. To overcome this problem, we propose a new evaluation technique for ASTRO-H. In our technique, on-orbit prediction of thermal deformation is performed thorough numerical simulation using a finite element (FE) model. The validation and correlation of the FE model are carried out by comparing results with thermal deformation test data collected in advance. This technique is especially suitable for satellites that are exposed to various thermal conditions on orbit. Using this technique, we confirmed all of the requirements for on-orbit pointing accuracy and precision in ASTRO-H.

Published
2015

21. Flutter Suppression of Cantilevered Plate Wing using Piezoelectric Materials

Author

Kenji Minesugi, Kanjuro Makihara, and Junjiro Onoda

Subjects
Engineering, Cantilever, Wing, business.industry, Acoustics, Flutter, Supersonic speed, Aerodynamics, Structural engineering, business, Piezoelectricity, Finite element method, Negative impedance converter
Abstract

The supersonic flutter suppression of a cantilevered plate wing is studied with the finite element method and the quasi-steady aerodynamic theory. We suppress wing flutter by using piezoelectric materials and electric devices. Two approaches to flutter suppression using piezoelectric materials are presented; an energy-recycling semi-active approach and a negative capacitance approach. To assess their flutter suppression performances, we simulate flutter dynamics of the plate wing to which piezoelectric patches are attached. The critical dynamic pressure drastically increases with our flutter control using a negative capacitor.

Published
2006

22. Novel Approach to Self-Sensing Actuation for Semi-Active Vibration Suppression

Author

Kenji Minesugi, Kanjuro Makihara, and Junjiro Onoda

Subjects
Vibration, Engineering, Control theory, business.industry, Robustness (computer science), Piezoelectric sensor, Active vibration control, Vibration control, Bridge circuit, Aerospace Engineering, Truss, Linear-quadratic regulator, business
Abstract

Accepted: 2006-03-04, 資料番号: SA1000544000

Published
2006

23. New approach to semi-active vibration isolation to improve the pointing performance of observation satellites

Author

Junjiro Onoda, Kenji Minesugi, and Kanjuro Makihara

Subjects
Circuit switching, Engineering, business.industry, Isolator, Condensed Matter Physics, Piezoelectricity, Atomic and Molecular Physics, and Optics, Attitude control, Semi active, Vibration isolation, Mechanics of Materials, Control theory, Signal Processing, Electronic engineering, Torque, General Materials Science, Satellite, Electrical and Electronic Engineering, business, Civil and Structural Engineering
Abstract

A momentum-wheel installed to provide attitude-control torque actually produces undesirable force or torque disturbances owing to wheel imbalance and imperfection of the ball-bearings. To improve the pointing performance of observation satellites, a vibration isolator is used to isolate observation devices from these disturbances. This paper compares three types of semi-active isolators that consist of a piezoelectric material and a switch-controlled passive circuit. Since this isolation is implemented by controlling a circuit switch no external energy is supplied to the system, and so the system is stable even when a malfunction occurs in control. We propose a simple but effective isolation method that needs to know only one velocity value instead of the full state of the system. Numerical simulations with a simple model of an observation satellite demonstrated that the proposed isolator works well to isolate an observation device from disturbances caused by the momentum-wheel, without causing any degradation in the attitude control of satellites.

Published
2006

24. Numerical Analysis of Powerful Shock Absorber Utilizing Particle-Dispersion ER Fluid

Author

Kenji Minesugi, Kanjuro Makihara, and Junjiro Onoda

Subjects
Physics, business.industry, Astrophysics::High Energy Astrophysical Phenomena, Attenuation, Aerospace Engineering, Mechanics, Nonlinear control, Critical value, Moving shock, Shock (mechanics), Shock absorber, Acceleration, Optics, Space and Planetary Science, business, Dispersion (water waves), Astrophysics::Galaxy Astrophysics
Abstract

This novel control logic for a shock absorber using particle-dispersion Electro-Rheological (ER) fluid is a powerful means of shock attenuation for satellite instruments that are subjected to lift-off shock or pyrodevice ignition shock. Satellite instruments may be damaged when the acceleration generated by the input shock exceeds their critical acceleration value. The proposed method attenuates the shock so that the instrument’s acceleration does not exceed the critical value, even when the shock is too large to be accepted. In contrast to conventional linear shock controls, the proposed shock control does not attempt to attenuate a small shock in order to prepare for attenuating a coming large shock. This innovative nonlinear control enables the absorber to effectively attenuate a powerful shock. Numerical simulations show that the new shock absorber system attenuates shocks better than a passive system or a conventional linear control system.

Published
2006

26. Study on Vibration Suppression System Using Thin Film with Viscous Lamina

Author

Hiroshi Okubo, Junjiro Onoda, Naoyuki Watanabe, and Kenji Minesugi

Subjects
Lamina, Materials science, business.industry, Flow (psychology), Shear load, Structural engineering, Viscoelasticity, Physics::Fluid Dynamics, Vibration, Spring (device), Adhesive, Thin film, Composite material, business
Abstract

Passive damping augmentation is one of attractive methods for vibration suppression to various kinds of structures because it is definitely stable and generally simple. The system using thin film with viscous adhesive indicated a remarkable effect to the vibration suppression in the practical application to a satellite. To investigate its damping characteristic, several kinds of experiments have been performed. The results show that the non-linear behavior cause of non-Newtonian flow between shear load and shear deformation velocity in the viscous lamina of the thin film contributes to the damping capability. A mathematical model which consists of spring elements as film and friction elements as viscous lamina has been proposed from experiments. The simulational results with this present model are in good agreement with experimental ones.

Published
2005

27. Systematic Approach to Achieve Fine Pointing Requirement of SOLAR-B

Author

Keiken Ninomiya, Kenji Minesugi, Saku Tsuneta, Takeo Kosugi, Sadanori Shimada, Kiyoshi Ichimoto, Osamu Takahara, Norimasa Yoshida, and Tatsuaki Hashimoto

Subjects
Engineering, Spacecraft, business.industry, Control engineering, Satellite system, law.invention, Telescope, Attitude control, Inertial measurement unit, law, Control theory, Frequency domain, Time domain, business, Transmissibility (structural dynamics)
Abstract

The systematic approach adopted in SOLAR-B in order to achieve its fine pointing requirement is presented. The approach consists of : (1)unique pointing requirement analysis in frequency domain that provides a framework of satellite system design, (2)pointing performance analysis including attitude control, telescope pointing control, spacecraft dynamics, structural dynamics and telescope optics, (3)careful disturbance management both in frequency and time domain based on specially devised control parameters, and (4)elaborate tests such as microvibration transmissibility test using the structural model of the spacecraft with real and simulated disturbance sources and very sensitive inertial sensors.

Published
2004

28. The ASTRO-H X-ray astronomy satellite

Author

Hironori Matsumoto, Yasuharu Sugawara, Hiroshi Tsunemi, Steve Allen, Ikuyuki Mitsuishi, James Pontius, Luigi C. Gallo, Dmitry Khangulyan, Hiroyuki Uchida, Yuichi Terashima, Yoichi Yatsu, Kazutaka Yamaoka, Kiyoshi Hayashida, Makoto Sawada, Peter Shirron, Hirofumi Noda, Andrew C. Fabian, Nicholas E. White, Brian R. McNamara, Dan R. Wilkins, Franco Moroso, Maxim Markevitch, Tadayuki Takahashi, Shin Mineshige, Peter J. Serlemitsos, Stephanie M. LaMassa, Tahir Yaqoob, Richard Mushotzky, Satoshi Sugita, Akihiro Furuzawa, Philipp Azzarello, Atsushi Wada, Yoh Takei, Yoshito Haba, Jun Kataoka, Daisuke Yonetoku, Yoshitaka Ishisaki, Helen Russell, Satoru Katsuda, Hiroaki Takahashi, Knox S. Long, Shinya Nakashima, Meg Urry, Housei Nagano, Chris Baluta, Atsushi Okamoto, Maria Chernyakova, Shin Watanabe, Randall K. Smith, Hans A. Krimm, Samar Safi-Harb, Yuichiro Ezoe, Tsuyoshi Okazaki, Takeshi Go Tsuru, Hiroshi Nakajima, Shin-ichiro Sakai, Katja Pottschmidt, Timothy R. Kallman, Stefan Funk, Kosuke Sato, Naomi Ota, Chikara Natsukari, Kazuo Makishima, Ken Ebisawa, Yasuyuki T. Tanaka, Massimiliano Galeazzi, Tatsuro Kosaka, Mina Ogawa, Jan-Willem den Herder, Atsumasa Yoshida, Joseph Miko, Chris Done, Shin'ichiro Uno, Kosei Ishimura, Hideyuki Mori, Takeshi Nakamori, H. Sameshima, Edward M. Cackett, Francesco Tombesi, Jelle Kaastra, Naoko Iyomoto, Kumi Ishikawa, Takashi Okajima, Yoshihiro Ueda, Hiroyasu Tajima, Mark O. Kimball, Arvind Parmar, Yasuko Shibano, Ryo Iizuka, Masayuki Ohta, Gary A. Sneiderman, Thomas G. Bialas, Toshio Murakami, Masanori Ohno, Christopher S. Reynolds, Masashi Kimura, Yoshiyuki Inoue, Masayuki Ito, Masayoshi Nobukawa, Marshall W. Bautz, Atsushi Harayama, Olivier Limousin, Naohisa Anabuki, Taro Kawano, Maki Shida, Martin Pohl, Saori Konami, Katsuhiro Hayashi, Aya Kubota, Chris Jewell, Yoshitomo Maeda, Steve O' Dell, Yukikatsu Terada, Keiji Ogi, Masanobu Ozaki, Kenji Minesugi, Takahiro Yamada, Edgar Canavan, Hiroki Akamatsu, Katsuji Koyama, Tomomi Watanabe, Marc Audard, Andrew Szymkowiak, Eric J. Miller, Ciro Pinto, Irina Zhuravleva, Shigeo Kawasaki, Jon M. Miller, Grzegorz Madejski, Makoto Tashiro, Ann Hornschemeier, Robert Petre, Koji Mori, Yasunobu Uchiyama, David H. Lumb, Brian D. Ramsey, Alex Koujelev, Shin'ichiro Takeda, Keisuke Shinozaki, Una Hwang, D. Haas, Shiro Ueno, Koji Mukai, Theodore Muench, Shinya Yamada, Masaharu Nomachi, Hiroshi Murakami, Kirk Gilmore, Keith A. Arnaud, Yoichi Sato, Kyoko Matsushita, Yoshiharu Namba, Takuya Miyazawa, Claudio Ricci, Teruaki Enoto, Masahiro Tsujimoto, Ryuichi Fujimoto, Dan McCammon, Daniel S. McGuinness, Abderahmen Zoghbi, Carlo Ferrigno, Motohide Kokubun, Stéphane Paltani, Elisa Costantini, Hiroshi Tomida, Maurice A. Leutenegger, Laura Brenneman, Tsunefumi Mizuno, Keisuke Tamura, Aurora Simionescu, Toru Tamagawa, Paolo De Coppi, Hiroyuki Sugita, Rie Sato, F. Scott Porter, Yusuke Nishioka, Franccois Lebrun, Takanobu Shimada, Yuzuru Tawara, Takayoshi Kohmura, Makoto Yamauchi, Shinya Saito, Jelle de Plaa, Michael J. DiPirro, Poshak Gandhi, Yasushi Fukazawa, Richard L. Kelley, Hirokazu Odaka, Nobuyuki Kawai, Junko S. Hiraga, Frits Paerels, Hiromi Seta, Takao Nakagawa, Rubens Reis, Tetsu Kitayama, Manabu Ishida, Cor P. de Vries, Hiromitsu Takahashi, Kazuhisa Mitsuda, Akio Hoshino, Kazuhiro Nakazawa, Felix Aharonian, Matteo Guainazzi, Meng P. Chiao, Eugenio Ursino, Adam R. Foster, John ZuHone, Hiroyuki Ogawa, John P. Doty, Takayuki Hayashi, Yasuo Tanaka, Junichiro Katsuta, Madoka Kawaharada, Hisamitsu Awaki, Kevin R. Boyce, John P. Hughes, Hiroya Yamaguchi, Ryo Nagino, Lorella Angelini, Philippe Laurent, Michael Loewenstein, Tuneyoshi Kamae, Yang Soong, Takaaki Tanaka, Tadayasu Dotani, Candace Masters, Aya Bamba, Kenji Hamaguchi, Roger Blandford, Kazunori Ishibashi, Takayuki Yuasa, Hideki Uchiyama, Takayuki Tamura, Kazuyuki Hirose, Naoko Iwata, Shunji Kitamoto, Goro Sato, Greg Brown, Shutaro Ueda, Megan E. Eckart, Cynthia Simmons, Takaya Ohashi, Hideyo Kunieda, Lukasz Stawarz, Yohko Tsuboi, Norbert Werner, Fumie Akimoto, Shigeo Yamauchi, Noriko Y. Yamasaki, Nobutaka Bando, Isamu Hatsukade, Caroline A. Kilbourne, and Makoto Asai

Subjects
Physics, Astronautics, X-ray astronomy, Astrophysics::High Energy Astrophysical Phenomena, gamma radiation, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy, x-rays, x-ray astronomy, Redshift, Gravitation, satellites, Settore FIS/05 - Astronomia e Astrofisica, spectral resolution, Satellite, equipment and services, Spectral resolution, Astrophysics - Instrumentation and Methods for Astrophysics, galaxy groups and clusters, Instrumentation and Methods for Astrophysics (astro-ph.IM), Galaxy cluster
Abstract

The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions developed by the Institute of Space and Astronautical Science (ISAS), with a planned launch in 2015. The ASTRO-H mission is equipped with a suite of sensitive instruments with the highest energy resolution ever achieved at E > 3 keV and a wide energy range spanning four decades in energy from soft X-rays to gamma-rays. The simultaneous broad band pass, coupled with the high spectral resolution of Delta E < 7 eV of the micro-calorimeter, will enable a wide variety of important science themes to be pursued. ASTRO-H is expected to provide breakthrough results in scientific areas as diverse as the large-scale structure of the Universe and its evolution, the behavior of matter in the gravitational strong field regime, the physical conditions in sites of cosmic-ray acceleration, and the distribution of dark matter in galaxy clusters at different redshifts., 24 pages, 18 figures, Proceedings of the SPIE Astronomical Instrumentation "Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray"

Published
2014

29. Simultaneous Optimization of Intelligent Structure and Feedback Gains for Flexible Structure Control

Author

Junjiro Onoda, Kenji Minesugi, and Yong Li

Subjects
Optimal design, Engineering, business.industry, Structure (category theory), Stiffness, Control engineering, Plant, Sizing, Computer Science::Other, Computer Science::Robotics, Vibration, Control theory, medicine, Structure control, medicine.symptom, Actuator, business
Abstract

A new optimal design methodology is formulated for the placement of piezoelectric actuator and the feedback gains in vibration suppression of flexible structure. For the simultaneously optimal design of the location and sizing of collocated piezoelectric actuator/sensor pairs and the feedback gains, the effect of changes in the mass and the stiffness of the structure by addition of actuator/sensor pairs is considered and combined with control performance index to obtain a composite objective function, and the procedure developed in this paper leads to solutions that are independent of initial conditions of the flexible structure.}

Published
2001

30. Behavior of Piezoelectric Transducer on Energy-Recycling Semiactive Vibration Suppression

Author

Kenji Minesugi, Kanjuro Makihara, and Junjiro Onoda

Subjects
Engineering, Energy recovery, Piezoelectric sensor, business.industry, Acoustics, Electric potential energy, Vibration control, Aerospace Engineering, Capacitance, Piezoelectricity, Vibration, Control theory, Energy recycling, business
Abstract

Accepted: 2005-09-19, 資料番号: SA1000543000

Published
2006

31. Semiactive Vibration Suppression with Electrorheological-Fluid Dampers

Author

Kenji Minesugi, Junjiro Onoda, and Hyun-Ung Oh

Subjects
Engineering, Cantilever, business.industry, Vibration control, Aerospace Engineering, Truss, Structural engineering, Linear-quadratic regulator, Linear-quadratic-Gaussian control, Damper, Vibration, Control theory, Tuned mass damper, Physics::Atomic and Molecular Clusters, business
Abstract

Accepted: 1997-07-29, 資料番号: SA1001747000

Published
1997

32. Semi-active vibration suppression of truss structures by electro-rheological fluid

Author

Junjiro Onoda, Kenji Minesugi, and Hyun-Ung Oh

Subjects
Vibration, Engineering, Computer simulation, Control theory, business.industry, Tuned mass damper, Aerospace Engineering, Truss, Structural engineering, business, Beam (structure), Damper, Electrorheological fluid
Abstract

To semi-actively suppress the vibration of space truss structures, a variable damper using electro-rheological (ER) fluid is designed and fabricated. The characteristics of the damper are measured in quasi-static tests, and a simple mathematical model of the damper is proposed. Based on this mathematical model and the LQR control theory, a semi-active control scheme is proposed for vibration suppression. To investigate the performance of the scheme, numerical simulations of the semiactive vibration suppression of a 10-bay truss beam with an ER fluid damper are performed. Simulation results indicate the higher performance of the semi-actively controlled system than the optimally tuned passive system. Vibration tests and semi-active vibration suppression experiments of the 10-bay truss beam with the ER fluid damper are also performed. The characteristics of the damper obtained from the vibration tests are consistent with those from the quasi-static tests. The semi-active vibration suppression experiment results are consistent with the numerical simulation, and demonstrate the effectiveness of the present approach.

Published
1997

33. Induced Vibration of High-Precision Extensible Optical Bench during Extension on Orbit.

Author

Kosei ISHIMURA, Manabu ISHIDA, Taro KAWANO, Kenji MINESUGI, Kazuhisa ABE, Takashi SASAKI, Ryo IIZUKA, and Nobutaka BANDO

Subjects
STATISTICAL accuracy, THRESHOLD (Perception), VIBRATION (Mechanics), SIMULATION methods & models, TELESCOPES
Abstract

An Extensible Optical Bench (EOB) for a X-ray satellite (ASTRO-H) had a length of 6.4m in extended configuration. Although the same type of extensible mast was used in Space Radio Telescope (Halca) in 1997, the tip mass was quite different in the case of ASTRO-H. Due to the tip mass of 150kg, the natural frequency of EOB was less than 1Hz in the extended configuration. ASTRO-H was launched on Feb. 17, 2016, and the EOB was extended on Feb. 28, 2016, successfully. However, because the vibration of EOB occurred during the extension, the extension operation was carried out over four passes intermittently. When the amplitude of induced vibration excessed the predefined threshold, we stopped the extension, then stayed until the vibration was damped. In this paper, the induced vibration during extension and its mechanism are reported. Through simulations, it is confirmed that one of the major causes of the vibration is a periodic change of gap between mast and canister at the root of EOB. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
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35. Semiactive vibration suppression by variable-damping members

Author

Junjiro Onoda and Kenji Minesugi

Subjects
Engineering, Computer simulation, business.industry, Vibration control, Aerospace Engineering, Truss, Linear-quadratic regulator, Structural engineering, Damper, Vibration, Robustness (computer science), Control theory, business, Control logic
Abstract

Accepted: 1995-08-20, 資料番号: SA1001745000

Published
1996

36. Two-dimensional Deployable Hexapod Truss

Author

Kenji Minesugi, Junjiro Onoda, and Dan-Ying Fu

Subjects
Flexibility (engineering), Hexapod, Engineering, Space and Planetary Science, business.industry, Aerospace Engineering, Truss, Point (geometry), Structural engineering, business, Space exploration
Abstract

Accepted: 1996-01-18, 資料番号: SA1001769000

Published
1996

37. Passive damping of truss vibration using preloaded joint backlash

Author

Kenji Minesugi, Tetsuji Sano, and Junjiro Onoda

Subjects
Vibration, Engineering, Damping ratio, Normal mode, business.industry, Magnetic damping, Vibration control, Aerospace Engineering, Truss, Structural engineering, business, Damping torque, Slipping
Abstract

Accepted: 1994-06-21, 資料番号: SA1001743000

Published
1995

38. Alignment performance of scientific instruments mounted on ASTRO-H (Hitomi)

Author

Hiroyuki Kajiura, Daisuke Nakayama, Jun Kurihara, Kosei Ishimura, Manabu Ishida, Ryo Iizuka, Kenji Minesugi, Masaaki Tsushima, Kazuhiro Nakazawa, Osamu Maeda, Naoko Iwata, Atsushi Wada, Takahiro Yumoto, Yukari Ono, Kiyotaka Tachikawa, Mitsuhisa Baba, Mizuho Ikeda, Takayuki Yuasa, Taro Kawano, Kazuhiro Abe, Kazunori Shoji, Shin Watanabe, Kazuro Matsumoto, Shiro Ueno, Tsunefumi Mizuno, Kuniyuki Omagari, Akira Kito, Chikara Natsukari, Takahito Amanuma, Yuhei Hayasaka, Tadayuki Takahashi, Takashi Sasaki, Ken Goto, and Takayuki Hayashi

Subjects
Scientific instrument, Engineering, business.industry, Aerospace engineering, business
Published
2016

39. The ASTRO-H X-ray Observatory

Author

Tadayuki Takahashi, Kazuhisa Mitsuda, Richard Kelley, Henri Aarts, Felix Aharonian, Hiroki Akamatsu, Fumie Akimoto, Steve Allen, Naohisa Anabuki, Lorella Angelini, Keith Arnaud, Makoto Asai, Marc Audard, Hisamitsu Awaki, Philipp Azzarello, Chris Baluta, Aya Bamba, Nobutaka Bando, Mark Bautz, Roger Blandford, Kevin Boyce, Greg Brown, Ed Cackett, Mara Chernyakova, Paolo Coppi, Elisa Costantini, Jelle de Plaa, Jan-Willem den Herder, Michael DiPirro, Chris Done, Tadayasu Dotani, John Doty, Ken Ebisawa, Megan Eckart, Teruaki Enoto, Yuichiro Ezoe, Andrew Fabian, Carlo Ferrigno, Adam Foster, Ryuichi Fujimoto, Yasushi Fukazawa, Stefan Funk, Akihiro Furuzawa, Massimiliano Galeazzi, Luigi Gallo, Poshak Gandhi, Keith Gendreau, Kirk Gilmore, Daniel Haas, Yoshito Haba, Kenji Hamaguchi, Isamu Hatsukade, Takayuki Hayashi, Kiyoshi Hayashida, Junko Hiraga, Kazuyuki Hirose, Ann Hornschemeier, Akio Hoshino, John Hughes, Una Hwang, Ryo Iizuka, Yoshiyuki Inoue, Kazunori Ishibashi, Manabu Ishida, Kosei Ishimura, Yoshitaka Ishisaki, Masayuki Ito, Naoko Iwata, Naoko Iyomoto, Jelle Kaastra, Timothy Kallman, Tuneyoshi Kamae, Jun Kataoka, Satoru Katsuda, Hajime Kawahara, Madoka Kawaharada, Nobuyuki Kawai, Shigeo Kawasaki, Dmitry Khangaluyan, Caroline Kilbourne, Masashi Kimura, Kenzo Kinugasa, Shunji Kitamoto, Tetsu Kitayama, Takayoshi Kohmura, Motohide Kokubun, Tatsuro Kosaka, Alex Koujelev, Katsuji Koyama, Hans Krimm, Aya Kubota, Hideyo Kunieda, Stephanie LaMassa, Philippe Laurent, Francois Lebrun, Maurice Leutenegger, Olivier Limousin, Michael Loewenstein, Knox Long, David Lumb, Grzegorz Madejski, Yoshitomo Maeda, Kazuo Makishima, Genevieve Marchand, Maxim Markevitch, Hironori Matsumoto, Kyoko Matsushita, Dan McCammon, Brian McNamara, Jon Miller, Eric Miller, Shin Mineshige, Kenji Minesugi, Ikuyuki Mitsuishi, Takuya Miyazawa, Tsunefumi Mizuno, Hideyuki Mori, Koji Mori, Koji Mukai, Toshio Murakami, Hiroshi Murakami, Richard Mushotzky, Hosei Nagano, Ryo Nagino, Takao Nakagawa, Hiroshi Nakajima, Takeshi Nakamori, Kazuhiro Nakazawa, Yoshiharu Namba, Chikara Natsukari, Yusuke Nishioka, Masayoshi Nobukawa, Masaharu Nomachi, Steve O'Dell, Hirokazu Odaka, Hiroyuki Ogawa, Mina Ogawa, Keiji Ogi, Takaya Ohashi, Masanori Ohno, Masayuki Ohta, Takashi Okajima, Atsushi Okamoto, Tsuyoshi Okazaki, Naomi Ota, Masanobu Ozaki, Fritzs Paerels, Stéphane Paltani, Arvind Parmar, Robert Petre, Martin Pohl, F. Scott Porter, Brian Ramsey, Rubens Reis, Christopher Reynolds, Helen Russell, Samar Safi-Harb, Shin-ichiro Sakai, Hiroaki Sameshima, Jeremy Sanders, Goro Sato, Rie Sato, Yohichi Sato, Kosuke Sato, Makoto Sawada, Peter Serlemitsos, Hiromi Seta, Yasuko Shibano, Maki Shida, Takanobu Shimada, Keisuke Shinozaki, Peter Shirron, Aurora Simionescu, Cynthia Simmons, Randall Smith, Gary Sneiderman, Yang Soong, Lukasz Stawarz, Yasuharu Sugawara, Hiroyuki Sugita, Satoshi Sugita, Andrew Szymkowiak, Hiroyasu Tajima, Hiromitsu Takahashi, Shin-ichiro Takeda, Yoh Takei, Toru Tamagawa, Takayuki Tamura, Keisuke Tamura, Takaaki Tanaka, Yasuo Tanaka, Makoto Tashiro, Yuzuru Tawara, Yukikatsu Terada, Yuichi Terashima, Francesco Tombesi, Hiroshi Tomida, Yohko Tsuboi, Masahiro Tsujimoto, Hiroshi Tsunemi, Takeshi Tsuru, Hiroyuki Uchida, Yasunobu Uchiyama, Hideki Uchiyama, Yoshihiro Ueda, Shiro Ueno, Shinichiro Uno, Meg Urry, Eugenio Ursino, Cor de Vries, Atsushi Wada, Shin Watanabe, Norbert Werner, Nicholas White, Takahiro Yamada, Shinya Yamada, Hiroya Yamaguchi, Noriko Yamasaki, Shigeo Yamauchi, Makoto Yamauchi, Yoichi Yatsu, Daisuke Yonetoku, Atsumasa Yoshida, and Takayuki Yuasa

Subjects
Physics, Spectrometer, business.industry, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, X-ray, Imaging spectrometer, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, law.invention, Telescope, Optics, Cardinal point, Settore FIS/05 - Astronomia e Astrofisica, law, Observatory, Spectral resolution, business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions initiated by the Institute of Space and Astronautical Science (ISAS). ASTRO-H will investigate the physics of the high-energy universe via a suite of four instruments, covering a very wide energy range, from 0.3 keV to 600 keV. These instruments include a high-resolution, high-throughput spectrometer sensitive over 0.3-2 keV with high spectral resolution of Delta E < 7 eV, enabled by a micro-calorimeter array located in the focal plane of thin-foil X-ray optics; hard X-ray imaging spectrometers covering 5-80 keV, located in the focal plane of multilayer-coated, focusing hard X-ray mirrors; a wide-field imaging spectrometer sensitive over 0.4-12 keV, with an X-ray CCD camera in the focal plane of a soft X-ray telescope; and a non-focusing Compton-camera type soft gamma-ray detector, sensitive in the 40-600 keV band. The simultaneous broad bandpass, coupled with high spectral resolution, will enable the pursuit of a wide variety of important science themes., 22 pages, 17 figures, Proceedings of the SPIE Astronomical Instrumentation "Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray"

Published
2012

40. Semiactive Vibration Suppression of Truss Structures by Coulomb Friction

Author

Kenji Minesugi and Junjiro Onoda

Subjects
Engineering, Mathematical model, Computer simulation, business.industry, Numerical analysis, Aerospace Engineering, Spectral density, Truss, Structural engineering, Vibration, Space and Planetary Science, Control theory, Control system, Transient response, business
Abstract

Accepted: 1992-12-03, 資料番号: SA1001767000

Published
1994

41. The ASTRO-H Mission

Author

Ann Hornschemeier, Peter Shirron, Scott Porter, Kyoko Matsushita, Nobutaka Bando, Naoki Isobe, Toru Tamagawa, Miyako Tozuka, Masanori Ohno, Christopher S. Reynolds, Katsuji Koyama, Yoichi Yatsu, Kazutaka Yamaoka, Michael J. DiPirro, Frits Paerels, Yasunobu Uchiyama, Takuya Miyazawa, Toshio Murakami, Kazuyuki Hirose, Stéphane Paltani, Motohide Kokubun, Rita M. Sambruna, Andrew C. Fabian, Grzegorz Madejski, Kazuo Makishima, Masahiro Tsujimoto, Ryuichi Fujimoto, Hiroyuki Uchida, John P. Hughes, Kenzo Kinugasa, Hiroshi Tsunemi, Hideaki Katagiri, Lorella Angelini, Takao Nakagawa, Nicholas E. White, Richard L. Kelley, Peter J. Serlemitsos, Yoshiharu Namba, Shin Mineshige, Akihiro Furuzawa, Olivier Limousin, Cor P. de Vries, Yang Soong, Arvind Parmer, Hiroyuki Ogawa, Paolo De Coppi, Shin-ichiro Sakai, Chris Done, Takeshi Nakamori, Naomi Ota, Fumie Akimoto, Takeshi Go Tsuru, Takaya Ohashi, Satoru Katsuda, Taro Kotani, Takahiro Yamada, Meg Urry, Shigeo Yamauchi, Yoshihiro Ueda, Andrew Szymkowiak, Takayoshi Kohmura, Tadayuki Takahashi, Knox S. Long, Maki Shida, Michael Loewenstein, Yukikatsu Terada, Kosei Ishimura, Hideyuki Mori, Yuichiro Ezoe, Hironori Matsumoto, Steve O' Dell, Robert Petre, Yasuo Tanaka, Yuichi Terashima, Hiroyasu Tajima, Tuneyoshi Kamae, Goro Sato, Aya Kubota, Greg Brown, Hideyo Kunieda, Lukasz Stawarz, Isamu Hatsukade, Yoichi Sato, M. Pohl, Atsumasa Yoshida, Masayuki Ito, Masaharu Nomachi, Kenji Hamaguchi, Hiroyuki Sugita, Randall K. Smith, Gary A. Sneiderman, Hideki Uchiyama, Kiyoshi Hayashida, Koji Mukai, Elisa Costantini, Shigeo Kawasaki, Naoko Iwata, Mark W. Bautz, Philippe Laurent, Mina Ogawa, Shin'ichiro Uno, Timothy R. Kallman, Noriko Y. Yamasaki, Hiroshi Murakami, Shunji Kitamoto, Daisuke Yonetoku, Yoshitaka Ishisaki, Kirk Gilmore, Hiroshi Tomida, Keiji Ogi, Brian D. Ramsey, Dmitry Khangaluyan, Masanobu Ozaki, Kenji Minesugi, Makoto Yamauchi, Hiromitsu Takahashi, Kazuhisa Mitsuda, Keith C. Gendreau, Yuzuru Tawara, Hiroshi Nakajima, Keisuke Shinozaki, Jean Cottam, Makoto Tashiro, Jelle de Plaa, Nobuyuki Kawai, Takaaki Tanaka, Caroline A. Kilbourne, Ken Ebisawa, Kazuhiro Nakazawa, Y. Tsuboi, Yujin E. Nakagawa, Tetsu Kitayama, John Crow, Yasuyuki T. Tanaka, Massimiliano Galeazzi, Manabu Ishida, Richard Mushotzky, Dan McCammon, Takashi Okajima, Naohisa Anabuki, Francois Lebrun, Jan-Willem den Herder, Junko S. Hiraga, Takanobu Shimada, Felix Aharonian, Stefan Funk, Hiroya Yamaguchi, Yoshitomo Maeda, Steve Allen, Tatsuro Kosaka, Ryo Iizuka, Masayuki Ohta, Francesco Tombesi, Jelle Kaastra, Kevin R. Boyce, Takayuki Tamura, Aya Bamba, Roger Blandford, Kazunori Ishibashi, Madoka Kawaharada, Hisamitsu Awaki, Tadayasu Dotani, Maxim Markevitch, Tsunefumi Mizuno, Yoh Takei, Yoshito Haba, Koji Mori, Jun Kataoka, Una Hwang, Teruaki Enoto, Jon M. Miller, Poshak Gandhi, Maria Chernyakova, Keith A. Arnaud, Yasushi Fukazawa, Shin Watanabe, Keisuke Tamura, APC - Astrophysique des Hautes Energies (APC - AHE), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Arnaud, Monique, Murray, Stephen S., Takahashi, Tadayuki, ASTRO-H, Paltani, Stéphane, Pohl, Martin, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Dipartimento di Astronomia, Universita degli Studi di Bologna, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO)-Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Dipartimento di Astronomia, Universita degli Studi di Bologna, and Università di Bologna [Bologna] (UNIBO)-Università di Bologna [Bologna] (UNIBO)

Subjects
[PHYS.ASTR.HE]Physics [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Ccd camera, Spectral resolution, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, ddc:500.2, 01 natural sciences, 7. Clean energy, Hard x-rays, law.invention, 010309 optics, Telescope, Coating, Optics, CCD cameras, Settore FIS/05 - Astronomia e Astrofisica, law, 0103 physical sciences, Angular resolution, Wide band, Spectroscopy, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, Spatial resolution, business.industry, Sensors, [SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Focal plane detector, Mirrors, Multilayers, ddc:520, business, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions initiated by the Institute of Space and Astronautical Science (ISAS). ASTRO-H will investigate the physics of the high-energy universe by performing high-resolution, high-throughput spectroscopy with moderate angular resolution. ASTRO-H covers very wide energy range from 0.3 keV to 600 keV. ASTRO-H allows a combination of wide band X-ray spectroscopy (5-80 keV) provided by multilayer coating, focusing hard X-ray mirrors and hard X-ray imaging detectors, and high energy-resolution soft X-ray spectroscopy (0.3-12 keV) provided by thin-foil X-ray optics and a micro-calorimeter array. The mission will also carry an X-ray CCD camera as a focal plane detector for a soft X-ray telescope (0.4-12 keV) and a non-focusing soft gamma-ray detector (40-600 keV) . The micro-calorimeter system is developed by an international collaboration led by ISAS/JAXA and NASA. The simultaneous broad bandpass, coupled with high spectral resolution of Delta E ~7 eV provided by the micro-calorimeter will enable a wide variety of important science themes to be pursued., 18 pages, 12 figures, Proceedings of the SPIE Astronomical Instrumentation "Space Telescopes and Instrumentation 2010: Ultraviolet to Gamma Ray"

Published
2010

42. Performance evaluation of energy recycling semi-active vibration suppression method with multi piezoelectric transducers

Author

Junjiro Onoda, Shigeru Shimose, and Kenji Minesugi

Subjects
Vibration, Materials science, Transducer, Piezoelectric motor, Piezoelectric sensor, business.industry, Piezoelectric accelerometer, Acoustics, PMUT, Vibration control, Telecommunications, business, Piezoelectricity
Abstract

We conducted various investigation of energy recycling semi-active vibration suppression method by using piezoelectric transducers attached to structures. In this method, piezoelectric transducers are connected to a shunt circuit with diodes and an inductance, and it makes better use of counter electromotive force to suppress the vibration. We had proposed some new ideas in order to upgrade this method. And we verified their high performances compared to conventional semi-active method by many experiments. In results of experiment that practically apply this method to an actual satellite structural model using lots of the piezoelectric transducer, it was found that vibration suppression performance depend on how piezoelectric transducers were connected each other. It is because their connection affects a resonance frequency and a total resistance of the shunt circuit. The performance of the method related to the connection of the piezoelectric transducers and their resistances dependent on frequency are described using experimental results in this paper.

Published
2010

43. Acoustic Measurement and Prediction of Solid Rockets in Static Firing Tests

Author

Kota Fukuda, Seiji Tsutsumi, Kozo Fujii, Kyoichi Ui, Tatsuya Ishii, Hideshi Oinuma, Junichi Kazawa, and Kenji Minesugi

Subjects
Engineering, Jet (fluid), Experimental uncertainty analysis, business.product_category, Rocket, business.industry, Acoustics, Near and far field, Acoustic wave, Computational fluid dynamics, Solid-fuel rocket, business, Sound pressure
Abstract

Acoustic measurements are executed in two series of static-firing tests of a solid rocket motor. The obtained data are quantitatively compared with calculation results of an empirical prediction method, NASA SP-8072 and CFD. According to the results, the NASA SP-8072 overestimates the sound pressure levels at the 20° and 35° points from the jet axis in the far field, although the SPLs at other measured points are reasonably predicted. On the other hand, the CFD calculation can clearly explain the generation and propagation mechanism of the acoustic wave and reasonably predict the SPLs at all the measured points. From the results, it is confirmed that the prediction accuracy of the CFD calculation is within 5 [dB] in overall sound pressure level, which is within the experimental uncertainty involved in the measured data, and the CFD is effective for the prediction of both the near and the far field acoustics generated from the rocket motors.

Published
2009

44. Novel Attenuation Method of Transmitted Sound into Rocket Faring Using Energy-Harvesting Technique

Author

Junjiro Onoda, Kenji Minesugi, and Kanjuro Makihara

Subjects
Engineering, business.product_category, Broadband noise, business.industry, Attenuation, Acoustics, Piezoelectricity, Vibration, Noise, Rocket, Computer Science::Sound, Monochromatic color, business, Energy harvesting
Abstract

The aim of this research is to attenuate the acoustic noise transmitted into a rocket faring by using a piezoelectric network. The paper makes two assumptions that faring structures can be deformed by actuation forces, or, not be deformed by them (i.e., easyto-deform or hard-to-deform cases). We characterize both of these and develop acoustic controls for each. Experiments and numerical simulations demonstrated that our methods attenuated the acoustic level generated not only by simple monochromatic noise, but also broadband noise. Unique issues concerning the acoustic problem were identified that have not been clearly recognized in the vibration suppression problem. Our attenuation method based on an energy-harvesting technique was shown to be effective for the acoustic problem in realistic hard-to-deform faring structures.

Published
2006

45. Improved self-sensing method for semi-active vibration suppression

Author

Kanjuro Makihara, Kenji Minesugi, and Junjiro Onoda

Subjects
Vibration, Engineering, Self sensing, business.industry, Control theory, Bridge circuit, Vibration control, Kalman filter, business, Laser Doppler vibrometer, Piezoelectricity, Voltage
Abstract

This paper presents a self-sensing method for semi-active vibration suppression that measures only the value of piezoelectric voltage. This self-sensing method is implemented with a Kalman filter with extended system equations, instead of the conventional bridge-circuit technique. The method has several advantages over the bridge-circuit self-sensing method, such as being applicable to MIMO systems. Experiments showed that our selfsensing system suppressed vibrations by combining the state-switching control and the synchronized-switching control. We confirmed that the self-sensing method is robust against model errors through the experiment with intentional frequency shift.

Published
2006

46. Alternative Control Logic for Type-II Variable-Stiffness System

Author

Junjiro Onoda and Kenji Minesugi

Subjects
Structure (mathematical logic), Engineering, business.industry, Vibration control, Aerospace Engineering, Truss, Stiffness, Vibration, Control theory, medicine, medicine.symptom, business, Control logic, Stiffness matrix
Abstract

Accepted: 1995-08-21, 資料番号: SA1001744000

Published
1996

47. The Solar Optical Telescope onboard the Solar-B

Author

Masaharu Suzuki, Nobuaki Kaido, Toshihida Horiuchi, Masaaki Mitsutake, Toshitaka Nakaoji, Hasuyama Yoshihiro, Masashi Otsubo, Tomonori Tamura, Joji Sakamoto, Shunichi Abe, Norihide Takeyama, Yasushi Sakurai, Motokazu Noguchi, Kazuhiro Nagae, M. Kubo, Osamu Takahara, Noboru Kawaguchi, Masao Nakagiri, Keizo Miyawaki, Hirohisa Hara, Akira Ohnishi, Hideo Saito, Toshifumi Shimizu, Yoshihiro Kato, Sadanori Shimada, Yoshinori Suematsu, Toshio Inoue, Yukio Katsukawa, Norimasa Yoshida, Kiyoshi Ichimoto, Kenji Minesugi, Izumi Mikami, Tadashi Matsushita, Yasushi Sakamoto, and Saku Tsuneta

Subjects
Physics, Gregorian telescope, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, X-ray telescope, Field of view, Optical telescope, law.invention, Lens (optics), Telescope, Optics, Cardinal point, Spitzer Space Telescope, law, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, business
Abstract

The solar optical telescope onboard the Solar-B is aimed to perform a high precision polarization measurements of the solar spectral lines in visible wavelengths to obtain, for the first time, continuous sets of high spatial resolution (~0.2arcsec) and high accuracy vector-magnetic-field map of the sun for studying the mechanisms driving the fascinating activity phenomena occurring in the solar atmosphere. The optical telescope assembly (OTA) is a diffraction limited, aplanatic Gregorian telescope with an aperture of Φ500mm. With a collimating lens unit and an active folding mirror, the OTA provides a pointing-stabilized parallel beam to the focal plane package (FPP) with a field of view of about 360x200arcsec. In this paper we identify the key technical issues of OTA for achieving the mission goal and describe the basic concepts in its optical, mechanical and thermal designs. The strategy to verify the in-orbit performance of the telescope is also discussed.

Published
2004

48. Novel Technique for Spacecraft’s Thermal Deformation Test Based on Transient Phenomena

Author

Taro Kawano, Atsushi Wada, Kenji Minesugi, Kazunori Shoji, Kosei Ishimura, Mizuho Ikeda, and Kuniyuki Omagari

Subjects
Physics, Novel technique, Spacecraft, business.industry, Transient Phenomena, Correlation, Thermal deformation, Electronic engineering, Transient (oscillation), Aerospace engineering, business, Thermal Deformation Test, ASTRO-H
Abstract

資料番号: SA1005040000

Published
2014

49. Semiactive ER isolator for momentum-wheel vibration isolation

Author

Hyun-Ung Oh, Junjiro Onoda, and Kenji Minesugi

Subjects
Engineering, Vibration isolation, Computer simulation, business.industry, Control theory, Isolator, Structural engineering, business, Reaction wheel
Abstract

This paper shows the effectiveness of a semiactive vibration isolator filled with liquid-crystal type electro-rheological (ER) fluid for disturbances generated by momentum-whee ls. The principal characteristics of an ER isolator was measured in dynamic tests, and a mathematical model of the isolator was proposed. Two control laws for semiactive approach were proposed. Numerical simulation results indicated that the proposed semiactive control produced much better isolation performance than a passive system.

Published
2001

50. An enhancement of ER-fluid variable damper for semiactive vibration suppression

Author

Junjiro Onoda, Hyun Oh, and Kenji Minesugi

Subjects
Vibration, Engineering, Amplitude, business.industry, Active vibration control, Electrode, Structural engineering, Physics::Chemical Physics, business, Reduction (mathematics), Damper, Electrorheological fluid, Voltage
Abstract

This paper proposes and investigates a method to enhance ER-fluid variable dampers for semiactive vibration suppression. The ER-fluid dampers studied in this paper can be modeled as a variable friction damper. The friction in the damper is an increasing function of the absolute value of the voltage applied to the electrode of the damper. Generally, the friction is not zero even when no voltage is applied. Semiactive vibration suppression is to control the friction such that vibrations damp quickly. Therefore, to suppress large amplitude vibrations to small amplitude, the friction needs to be varied through a large range. In other word, the ratio of the maximum and minimum values of the frictional force needs to be large. To increase the ratio by decreasing the minimum frictional force, this paper proposes to excite a high-frequency vibration of the electrode. The effectiveness of the electrode vibration for the reduction of the minimum frictional force is demonstrated in this paper by both static experiments and semiactive vibration suppression experiments. The results of semiactive vibration suppression experiments indicate that the minimum frictional force is reduced by the electrode vibration by factor of 1/3 - 1/2.

Published
1998

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