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364 results on '"Ding, Yibo"'

5. Virtual Structure Method UAV Distributed Formation Control Based on Improved Super-Twisting Sliding Mode

Author

Zhang, Hengmao, Ding, Yibo, Chi, Xianbin, Yue, Xiaokui, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Tan, Kay Chen, Series Editor, Qu, Yi, editor, Gu, Mancang, editor, Niu, Yifeng, editor, and Fu, Wenxing, editor

Published
2024
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6. An Intelligent Penetration Guidance Law Based on DDPG for Hypersonic Vehicle

Author

Guo, Rongyi, Ding, Yibo, Yue, Xiaokui, Ceccarelli, Marco, Series Editor, Agrawal, Sunil K., Advisory Editor, Corves, Burkhard, Advisory Editor, Glazunov, Victor, Advisory Editor, Hernández, Alfonso, Advisory Editor, Huang, Tian, Advisory Editor, Jauregui Correa, Juan Carlos, Advisory Editor, Takeda, Yukio, Advisory Editor, and Li, Shaofan, editor

Published
2024
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8. Intelligent Fault Diagnosis Method of Inertial Sensors for Space Gravitational Wave Detection

Author

Bi, Cheng, Yue, Xiaokui, Ding, Yibo, Dang, Zhaohui, Ceccarelli, Marco, Series Editor, Agrawal, Sunil K., Advisory Editor, Corves, Burkhard, Advisory Editor, Glazunov, Victor, Advisory Editor, Hernández, Alfonso, Advisory Editor, Huang, Tian, Advisory Editor, Jauregui Correa, Juan Carlos, Advisory Editor, Takeda, Yukio, Advisory Editor, and Li, Shaofan, editor

Published
2024
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32. Effect of carboxyl group on photoelectrochemical performance of TiO2 nanowire arrays for water splitting.

Author

Ding, Yibo, Jiang, Chenfeng, Sun, Yi, Zhang, Xiaoyan, and Ma, Xiaoqing

Subjects
*PHOTOCATHODES, *CARBOXYL group, *DYE-sensitized solar cells, *METAL oxide semiconductors, *NANOWIRES, *X-ray photoelectron spectroscopy, *OLEIC acid
Abstract

TiO2 is one of the most studied semiconductor materials for the photoelectrochemical water splitting to hydrogen production, but it only responds to ultraviolet light. The introduction of organic compound is one of the common means to expand the visible light response of TiO2. In this work, rutile TiO2 nanowire arrays (NWs) were grown on conductive glass by a modified solvothermal method using oleic acid as the key additive. The obtained TiO2 NWs are characterized using x-ray diffraction, x-ray photoelectron spectroscopy, infrared spectroscopy and electrochemical characterization. The results show that the carboxyl groups arising from oleic acid are chemically bonded with the TiO2 NWs in the form of chelating bidentate, which increases the visible light absorption range and active sites of TiO2, and reduces the transfer resistance between the photoelectrode and the electrolyte. The photocurrent density is doubled to 0.17 mA cm−2 at 1.23 V vs. RHE. This work provides a novel idea for the design of metal oxide semiconductor photoanodes by adsorbing organic compounds. [ABSTRACT FROM AUTHOR]

Published
2024
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33. Exploring the influencing factors of the electrochemical reduction process on the PEC water splitting performance of rutile TiO2.

Author

Ding, Yibo, Lin, Jiayu, Jiang, Chenfeng, Sun, Yi, Zhang, Xiaoyan, and Ma, Xiaoqing

Subjects
*ELECTROLYTIC reduction, *STANDARD hydrogen electrode, *NANORODS, *SURFACE structure, *RUTILE, *PHOTOELECTROCHEMISTRY
Abstract

The self-doping of oxygen vacancy and Ti3+ by electrochemical reduction (ER) method has been proved to be an effective means to improve the PEC performance of TiO2. However, the effect of the surface structure on ER treatment remains ambiguous. In this work, three kinds of nanostructured rutile TiO2 (nanowire arrays (TNWs), etched nanowire arrays (E-TNWs) and nanorod arrays (TNRs)) were reduced electrochemically to explore the factors influencing the ER process of rutile TiO2. The experimental results show that alkaline environment (1 M NaOH) is more conducive to the occurrence of ER reaction. And the reduced three kinds of nanostructured TiO2 photoanodes show a significantly higher photocurrent density of about 1.46, 1.65 and 1.45 mA cm−2 at 1.23 V vs. relative hydrogen electrode (RHE), respectively, which are 15, 16 and 1.1 times that of pristine TiO2. The different degrees of photocurrent density enhancement can be ascribed to the different degrees of electrochemical reduction of TiO2 with different crystallinity and exposed crystal facets as well as specific surface area. This study provides new insights into the mechanism of electrochemical reduction method. [ABSTRACT FROM AUTHOR]

Published
2024
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34. Exploring the influencing factors of the electrochemical reduction process on the PEC water splitting performance of rutile TiO2.

Author

Ding, Yibo, Lin, Jiayu, Jiang, Chenfeng, Sun, Yi, Zhang, Xiaoyan, and Ma, Xiaoqing

Subjects
ELECTROLYTIC reduction, STANDARD hydrogen electrode, NANORODS, SURFACE structure, RUTILE, PHOTOELECTROCHEMISTRY
Abstract

The self-doping of oxygen vacancy and Ti3+ by electrochemical reduction (ER) method has been proved to be an effective means to improve the PEC performance of TiO2. However, the effect of the surface structure on ER treatment remains ambiguous. In this work, three kinds of nanostructured rutile TiO2 (nanowire arrays (TNWs), etched nanowire arrays (E-TNWs) and nanorod arrays (TNRs)) were reduced electrochemically to explore the factors influencing the ER process of rutile TiO2. The experimental results show that alkaline environment (1 M NaOH) is more conducive to the occurrence of ER reaction. And the reduced three kinds of nanostructured TiO2 photoanodes show a significantly higher photocurrent density of about 1.46, 1.65 and 1.45 mA cm−2 at 1.23 V vs. relative hydrogen electrode (RHE), respectively, which are 15, 16 and 1.1 times that of pristine TiO2. The different degrees of photocurrent density enhancement can be ascribed to the different degrees of electrochemical reduction of TiO2 with different crystallinity and exposed crystal facets as well as specific surface area. This study provides new insights into the mechanism of electrochemical reduction method. [ABSTRACT FROM AUTHOR]

Published
2024
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35. A Narrow Pulses Less NL-PWM Method for Cascaded Converter with Improved Harmonic Characteristics Under Reduced Switching Frequency

Author

Mu, Jie, Xu, Yonghai, Zhang, Xueyin, Ding, Yibo, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Ma, Weiming, editor, Rong, Mingzhe, editor, Yang, Fei, editor, Liu, Wenfeng, editor, Wang, Shuhong, editor, and Li, Gengfeng, editor

Published
2021
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42. A Predefined-Time Nonsingular Terminal Sliding Mode Control for Multispace Transport Robot System With Varying Power Reaching Law

Author

Tao, Ran, Ding, Yibo, Yue, Xiaokui, and Wu, Nanxi

Abstract

This article proposes a predefined-time nonsingular terminal sliding mode controller (PNTSMC) for multispace transport robot system, which is suitable for complex on-orbit assembly tasks. First, a composite Lyapunov function predefined-time stability criterion (CLF-PSC) is proposed to simplify the stability analysis and controller design. Comparing with traditional predefined-time stability criterion, the CLF-PSC offers a simpler form. More importantly, combining with chain rule of the composite Lyapunov function, the CLF-PSC can be composed and decomposed flexibly, which makes it more convenient for application. Second, a unified framework for nonsingular terminal sliding mode surfaces is proposed. By integrating the CLF-PSC with the framework, a general method for predefined-time nonsingular terminal sliding mode surface (PNTSMF) design is presented, which can effectively avoid the singularity problem without violating strict predefined-time stability. In addition, two PNTSMFs are proposed as specific examples. In addition, a predefined-time reaching law with varying power is designed based on the CLF-PSC. Due to that the power can change with the sliding variable, the reaching law can weaken chattering, reduce control input, and strictly guarantee predefined-time convergence. Third, combining the PNTSMF with the reaching law, a predefined-time disturbance observer and a distributed cooperative PNTSMC are designed for the system, which exhibit excellent performance of predefined-time convergence, high precision, chattering suppression, and robustness against disturbances. Finally, simulations are provided to verify the performance of the proposed PNTSMF and PNTSMC.

Published
2024
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44. A 2.8 W Single-Frequency Laser Output at 1064 nm from a Gradient-Doped Composite Ceramic Non-Planar Ring Oscillator.

Author

Gao, Mingwei, Ding, Yibo, Wang, Qing, Wang, Lei, Gao, Yuan, Wang, Junping, Ji, Haohao, Zhang, Jian, and Gao, Chunqing

Subjects
FOCAL length, YAG lasers, CERAMICS, LASERS
Abstract

An efficient Nd: A YAG single-frequency laser was demonstrated using a gradient-doped ceramic non-planar ring oscillator (NPRO). A thermal model of the gradient-doped ceramic NPRO was built to analyze the temperature field and thermal focal length. By employing a gradient-doped gain structure, the thermal distribution within the NPRO can be effectively smoothed to reduce thermal lensing effects. Up to 2.8 W of single-frequency output power at 1064 nm from the gradient-doped ceramic NPRO was obtained, with a slope efficiency of 38%. [ABSTRACT FROM AUTHOR]

Published
2024
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