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105 results on '"Chesné, Simon"'

5. Vibration energy harvesting on a drone quadcopter based on piezoelectric structures

Author

Perez Matthias, Billon Kevin, Gerges Tony, Capsal Jean-Fabien, Cabrera Michel, Chesné Simon, and Jean-Mistral Claire

Subjects
vibration energy harvesting, structural health monitoring, piezoelectricity, plastronic, smart structure, quadcopter drone, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

The aim of this publication is to conclude on the interest of vibratory energy harvesting on classic quadcopter drone for autonomous applications (battery charging in real time, autonomous sensors), monitoring or even vibration control applications. A complete dynamic analysis allows to quantify the amount of electrical power that is possible to produce during the hovering flight of a quadcopter drone. These results have been obtained by substitution of the inert parts of the drone by piezoelectric components. For that purpose, different types of piezoelectric structures have been tested, including some commercial transducers (DuraAct from Piezoelectric Instrument and Murata buzzers) and some home-made such as a piezoelectric paint. Our original piezoelectric smart arms have been able to scavenge up to 5.35 mW during a stationary flight which remains quite enough to supply low-consumption sensors for monitoring applications.

Published
2022
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7. Hybrid skyhook mass damper

Author

Chesné Simon

Subjects
tuned mass samper, active vibration control, skyhook damper, velocity feedback, electromagnetic damper, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

The objective of this study is to increase the efficiency of an initial passive Tuned Mass Damper (TMD) by adding an active control unit. A critical issue in many engineering domains is the design of fail-safe active systems. The proposed hybrid system aims to address this issue and realizes the said objective. It emulates the behavior of a skyhook damper parallel to a passive TMD. Skyhook dampers acts like viscous dampers connected to the ground, reducing the vibration amplitudes without any overshoot. It can be difficult to design a specific control law to obtain a desired dynamical behavior. The paper presents two ways to understand and design the hyperstable control law for Hybrid Mass Damper (HMD) (also called Active TMD), using the power flow formulation or the mechanical impedance analysis. These approaches are illustrated through the synthesis of this hybrid device and the emulation of the Skyhook damper. It is shown that a well-designed control law for this kind of system may result in high damping performance, ensuring stability and a fail-safe behavior. In addition, the amplitude of the primary system’s response is reduced over the entire frequency range which is not the case for the usual active or hybrid systems. Robustness is analyzed and compared to that of the classical active mass damper, and an experimental set up validates the proposed hybrid system.

Published
2021
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15. Hybrid coupled damper for the mitigation of torsional vibrations and rotational irregularities in an automotive crankshaft: Concept and design subtleties.

Author

Paillot, Guillaume, Chesné, Simon, and Rémond, Didier

Subjects
*TORSIONAL vibration, *MECHANICAL oscillations, *WASTE minimization, *TUNED mass dampers, *ELECTRIC circuits, *POWER resources
Abstract

This paper presents a new configuration to tackle a twofold problem affecting a crankshaft: the torsional vibrations and the oscillation of the speed at the back end of the shaft due to the torque ripples created by the cylinders. These two phenomena already have industrial solutions, but the requirement levels increase and impose constant improvements. Moreover, the common vibration dampers rely on energy dissipation as heat, which in a context of waste reduction could be avoided. This concept relies on the association of an optimal passive mechanical damper, an electric circuit and electromechanical converters, without any external power supply, in order to ensure a safe operation. From a more fundamental point of view, these elements link a time-periodic correction and a nonstationary cyclic excitation. The core idea of the concept is to enable a redistribution of the energy within this coupled electromechanical circuit, where each element can behave as a power consumer or supplier, so that the oscillations of the mechanical elements can be decreased. In this paper, the authors describe and model this new concept in order to investigate the resulting dynamic behavior and the key design parameters that affect the damping performance. [ABSTRACT FROM AUTHOR]

Published
2023
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17. Improved integral force feedback controllers for lightweight flexible structures

Author

Lacaze, Florian, Paknejad Seyedahmadian, Ahmad, Remond, Didier D. R., Chesné, Simon, Lacaze, Florian, Paknejad Seyedahmadian, Ahmad, Remond, Didier D. R., and Chesné, Simon

Abstract

This study studies the performance of an integral force feedback controller for increasing the damping of lightweight flexible structures. Both methods of maximum damping and (Formula presented.) optimization are used to tune the parameters of the control system. Two modifications of the integral force feedback are proposed to compensate the effects of a soft stiffness to increase the authority of the actuator. Higher damping values are obtained by adding feedback terms to the integral force feedback. Optimal tuning, required actuator force, and stability are also discussed based on an academic model of a single-degree-of-freedom cable structure., SCOPUS: ar.j, DecretOANoAutActif, info:eu-repo/semantics/published

Published
2022

18. Energy harvesting using integrated piezoelectric transducer in a composite smart structure for self-powered sensor applications.

Author

Yan, Linjuan, Rodriguez, Jonathan, Billon, Kevin, Lallart, Mickaël, Collet, Manuel, Jean-Mistral, Claire, and Chesné, Simon

Subjects
ENERGY harvesting, SMART structures, PIEZOELECTRIC composites, PIEZOELECTRIC transducers, COMPOSITE structures, ENERGY consumption, POWER resources
Abstract

Self-sensing structures are tremendously needed in transport or energy applications. Nevertheless, structures are rarely designed in advance to harvest energy in realistic operational conditions, leading to sensing functions using most of the time batteries. Thus, this paper proposes a complete application of self-powered sensing using an integrated piezoelectric transducer on a representative composite structure, namely a smart composite reduced-model car. Based on an optimized self-powered Synchronized Switch Harvesting on Inductor circuit (SSHI) coupled with a complete electromechanical behavior study, up to 40 μ W can be harvested on a resistive load of 3 M Ω for a linear velocity of 12.5 km.h −1. This power allows supplying a temperature sensor and its wireless transmitter, whose data can be sent each 60s. Our functionalized car is a first step toward real industrial application cases and demonstrates the ability of the proposed method to enhance the energy harvesting process on an existing weakly coupled structure and use the vibrations as an energy source for relevant embedded microgenerators and associated self-powered sensors. [ABSTRACT FROM AUTHOR]

Published
2023
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22. Contrôle actif modal de la transparence acoustique de double parois par transducteurs piézo-electriques

Author

Lhuillier, Vincent, Gaudiller, Luc, Chesné, Simon, Pezerat, Charles, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2020

23. Passive and Active Strategies for Vibration Control of Lightly Damped Structures

Author

Collette, Christophe, Robert, Frédéric, Deraemaeker, Arnaud, Hendrick, Patrick, Kerschen, Gaetan, Chesné, Simon, Charles, Xavier, Paknejad Seyedahmadian, Ahmad, Collette, Christophe, Robert, Frédéric, Deraemaeker, Arnaud, Hendrick, Patrick, Kerschen, Gaetan, Chesné, Simon, Charles, Xavier, and Paknejad Seyedahmadian, Ahmad

Abstract

Lightweight designs in engineering applications give rise to flexible structures with extremely low internal damping. Vibrations of these flexible structures due to an unwanted excitation of system resonances may lead to high cycle fatigue failure and noise propagation. A common method to suppress the vibrations is to increase the damping of the system using one of the classical control techniques i.e. passive, active, and/or hybrid. Passive techniques are those control systems that are simply integrated into the structures with no need of external power source for their operations, like viscoelastic damping, piezoelectric and electromagnetic shunt damping, tuned mass damper, etc. However, the control performance of these systems, in terms of the damping ratio and the robustness to uncertainties, is highly limited to the system properties. For example, viscoelastic damping may not perform well at low frequencies and the performance of shunt damping is dependent on the electromechanical coupling between the structure and the transducer. To overcome the limitations associated with passive controls, it has been proposed to use active control systems, which are less sensitive to the system's parameters, to improve the control performance. It requires an integration of sensors and actuators with a feedback loop containing control laws. However, the high requirement of the external power source is not favorable for engineering applications where energy efficiency is the key parameter. The combination of active and passive strategies, known as hybrid control systems, can provide a fail-safe configuration with a high control performance and low power consumption. The price to pay for such configurations is the complexity of the design. This doctoral thesis first investigates the conceptual designs of all kinds of classical control systems for a simplified mechanical system. They include 1) the passive shunt using an electromagnetic transducer, 2) the active control system u, Doctorat en Sciences de l'ingénieur et technologie, info:eu-repo/semantics/nonPublished

Published
2021

29. Towards Low Consumption Smart Dampers

Author

Chesné, Simon, Collette, Christophe, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Department of Bio, Electro And Mechanical Systems (BEAMS), and Université libre de Bruxelles (ULB)

Subjects
[PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph], Active Control, TMD, 7. Clean energy, [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph]
Abstract

International audience; Combining a feedback control strategy with tuned mass dampers is an efficient way for enhancing the capability to damp structural vibration. Several strategies have been proposed in the literature, which are targeting specific features, like multi-mode control, selective mode control. However, a comparison of these concepts based on objective criteria is missing, although very important for detecting shortcomings, and limitations in practical implementations. The objective of this paper is to investigate an extensive comparison of three concepts of active damper, namely the dual loop controllers, Alpha-HMD and Hybrid-Double-TMD. This comparison will encompass criteria like stability margins, bandwidth, transducer stroke, maximum force, or power consumption.

Published
2020
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30. Vibration Control of Cable-Driven Parallel Robot for 3D Printing

Author

LACAZE, Florian, Chesné, Simon, Rémond, Didier, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), INSA-Lyon, Université de Lyon, Sciencesconf.org, CCSD, and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI]Engineering Sciences [physics], [SPI] Engineering Sciences [physics], [SPI.MECA.VIBR]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph], [SPI.MECA.VIBR] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph], [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing
Abstract

International audience; These last years, the additive manufacturing and 3D printing technologies have known some major break- throughs. The motion of a printer head can be made with cable transmission. The deployment of the cable- driven parallel robots (CDPR) in the industry is studied in very various application fields for their low cost and large workspace. Furthermore, the use of cables for the transmission induces a reduction of the mobile parts’ masses, compared to a rigid transmission, which enables to reach higher accelerations. Moreover, the structure of a CDPR is modular and reconfigurable thanks to the repositioning of the actuators’ anchor points. However, the lack of rigidity of a CDPR raises issues of accuracy and the rise of vibrations, which can be generated by the trajectory of the mobile parts, the actuators, the friction between pulleys and cables or disturbances. Several dynamic models of cables have been studied to understand the vibrating behaviour of a CDPR: a simple elastic model of springs with positive tensions, a lumped mass-spring model and a finite elements model based on a continuous one for the cables dynamics. The numerical simulation of the dynamic behaviour of the CDPR with these models enables the analysis of an appropriate control system and the design of a controller. It aims at ensuring an accurate positioning and a decrease of vibrations. In this contribution, we will firstly present the dynamic behaviour’s model and the issue of the actuation’s redundancy, systematically present on these robots to guarantee stiffness with the tension in the cables. A comparison will be done between the effects of the models on the conception and the performance of the controller. Thus, we explain that significant decreases in the vibration levels may be observed with the use of PID controllers. The generalisation of the command, the use of active control technologies and an experimental validation will be the next steps of this study.

Published
2019

31. Hybrid crankshaft control for the reduction of torsional vibrations and rotational irregularities

Author

Paillot, Guillaume, Chesné, Simon, Remond, Didier, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), INSA-Lyon, Université de Lyon, and Sciencesconf.org, CCSD

Subjects
Tuned Mass Dampers, [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI] Engineering Sciences [physics], [SPI.MECA.VIBR]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph], [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI]Engineering Sciences [physics], Electromagnetic conversion, Rotating systems, [SPI.MECA.VIBR] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, ComputingMilieux_MISCELLANEOUS, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing
Abstract

International audience

Published
2019

32. Hybrid Electromagnetic Shunt Damper for Vibration Control

Author

Paknejad Seyedahmadian, Ahmad, Zhao, Guoying, Chesné, Simon, Deraemaeker, Arnaud, Collette, Christophe, Paknejad Seyedahmadian, Ahmad, Zhao, Guoying, Chesné, Simon, Deraemaeker, Arnaud, and Collette, Christophe

Abstract

info:eu-repo/semantics/published

Published
2020

33. Design of a double spring membrane for a two degree-of-freedom electromagnetic vibration energy harvester

Author

Perez, Matthias, Billon, Kevin, Chesné, Simon, Jean-Mistral, Claire, Bouvet, Sandrine, Clerc, Christian, Sciencesconf.org, CCSD, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Vibratec (Vibratec), and INSA-Lyon, Université de Lyon

Subjects
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI]Engineering Sciences [physics], [SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI] Engineering Sciences [physics], [SPI.MECA.VIBR]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph], [SPI.MECA.VIBR] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph], [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing
Abstract

International audience; This paper reports on the design of a cm-scale double spring membrane used in a two degree-of-fre edom electromagnetic vibration energy harvester for railway monitoring applications. This type of membrane design enables to achieve very low stiffness for the springs (typically between 1N.mm-1 up to 10N.mm-1 ) in one piece, which reduces manufacturing los ses and greatly simplify the system assembly. In addition, they are very thin, resulting in extremely compact devices, which is very important in energy harvesting. The mechanical modelling of different types of membranes was performed using a finite element approach in order to highlight the best geometry. A series of membranes have been manufactured by machining into a non-magnetic steel and tested with the entire energy harvester.

Published
2019

34. Shunted piezoelectrical flextensionnal suspension for vibration insulation

Author

Billon, Kevin, Montcoudiol, Nathan, Aubry, Alice, Pascual, Rémi, Mosca, Frederic, Jean, Frederic, Pezerat, Charles, Bricault, Charlie, Chesné, Simon, Sciencesconf.org, CCSD, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), PYTHEAS Technology, Laboratoire d'Acoustique de l'Université du Mans (LAUM), Centre National de la Recherche Scientifique (CNRS)-Le Mans Université (UM), and INSA-Lyon, Université de Lyon

Subjects
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI]Engineering Sciences [physics], [SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI] Engineering Sciences [physics], [SPI.MECA.VIBR]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph], [SPI.MECA.VIBR] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph], [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.MECA] Engineering Sciences [physics]/Mechanics [physics.med-ph], [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing
Abstract

International audience; The objective of the PyDAMP project is to develop a hybrid mechanical suspension to reduce the vibrations transmission on a wide frequency band. The undesired vibrations are generated by small electric motors (few kilograms). The concept of suspension is inspired by a Class IV flextensionnel transducer [1-3]. Flextensional transducers are a class of mechanical amplifiers composed of an active part, usually piezoelectric (bars, discs, rings), or magnetostrictive, and a shell that radiates in the surrounding fluid [4–6]. The suspension with piezoelectric pillar is developped by PYTHEAS Technology. A finite element study has been achieved to ensure the validity of the concept in terms of maximum admissible Von Mises stress, maximum displacement and modes shapes. An electromechanical model of the piezoelectrical suspension has been developed. Mechanical elements are converted in electrical components and an equivalent electrical circuit can be found. The electromechanical coupling of the transducer allows the introduction of mechanical damping and electric damping with different shunts based on resistor and negative capacitance [7, 8]. The simulation and the shunt optimisation are facilitated with only one physic, taking into account the whole dynamic behaviour of the piezoeletrical suspension.The piezoelectrical suspension is compared to a conventional viscoelastic suspension in terms of performances in the audible frequency range and validated using experimental tests.

Published
2019

35. L'excitateur 6-axes de l'Equipex PHARE pour analyser et maitriser la dynamique de systèmes embarqués

Author

Chesné, Simon, Chatelet, Eric, Mahfoud, Jarir, Billon, Kevin, Legrand, Franck, Jarroux, Clément, Briend, Yvon, Dufour, Régis, CHATELET, Eric, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph], [PHYS.MECA.VIBR] Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

37. Shunted piezoelectric trap device to enhance energy harvesting

Author

Maugan, Fabien, Yi, Kaijun, MONTEIL, Mélodie, Chesné, Simon, Collet, Manuel, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), École Centrale de Lyon (ECL), and Université de Lyon-Université de Lyon-École Nationale des Travaux Publics de l'État (ENTPE)-Ecole Nationale d'Ingénieurs de Saint Etienne-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

38. Phase compensator for hyperstable hybrid mass

Author

Chesné, Simon, Collette, Christophe, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Department of Bio, Electro And Mechanical Systems (BEAMS), Université libre de Bruxelles (ULB), and Chesne, Simon

Subjects
[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph], [PHYS.MECA.STRU] Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2017

41. A development roadmap for critical technologies needed for TALC: a deployable 20m annular space telescope

Author

MacEwen, Howard, Fazio, Giovanni, Lystrup, Makenzie, Batalha, Natalie, Siegler, Nicholas, Tong, Edward, Sauvage, Marc, Amiaux, Jerome, Austin, James, Bello, Mara, Bianucci, Giovanni, Chesné, Simon, Citterio, Oberto, Collette, Christophe, Correia, Sébastien, Durand, Gilles, Molinari, Sergio, Pareschi, Giovanni, Penfornis, Yann, Sironi, Giorgia, Valsecchi, Giuseppe, Verpoort, Sven, Wittrock, Ulrich, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), CEA, Commissariat à l'Energie Atomique, Gyf Sur Yvette, France, Université Paris Diderot - Paris 7 (UPD7), Università di Pisa - UNIPISA (Pisa, Italy), Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Department of Bio, Electro And Mechanical Systems (BEAMS), Université Libre de Bruxelles [Bruxelles] (ULB), Université libre de Bruxelles (ULB), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and University of Pisa - Università di Pisa

Subjects
Physics, Aperture, business.industry, James Webb Space Telescope, Active optics, Technology readiness level, 7. Clean energy, 01 natural sciences, law.invention, 010309 optics, Telescope, Primary mirror, Optics, [PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph], law, 0103 physical sciences, Scalability, [PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Mechanics of the structures [physics.class-ph], Angular resolution, Aerospace engineering, business, 010303 astronomy & astrophysics, ComputingMilieux_MISCELLANEOUS
Abstract

Astronomy is driven by the quest for higher sensitivity and improved angular resolution in order to detect fainter or smaller objects. The far-infrared to submillimeter domain is a unique probe of the cold and obscured Universe, harboring for instance the precious signatures of key elements such as water. Space observations are mandatory given the blocking effect of our atmosphere. However the methods we have relied on so far to develop increasingly larger telescopes are now reaching a hard limit, with the JWST illustrating this in more than one way (e.g. it will be launched by one of the most powerful rocket, it requires the largest existing facility on Earth to be qualified). With the Thinned Aperture Light Collector (TALC) project, a concept of a deployable 20 m annular telescope, we propose to break out of this deadlock by developing novel technologies for space telescopes, which are disruptive in three aspects: • An innovative deployable mirror whose topology, based on stacking rather than folding, leads to an optimum ratio of collecting area over volume, and creates a telescope with an eight times larger collecting area and three times higher angular resolution compared to JWST from the same pre-deployed volume; • An ultra-light weight segmented primary mirror, based on electrodeposited Nickel, Composite and Honeycomb stacks, built with a replica process to control costs and mitigate the industrial risks; • An active optics control layer based on piezo-electric layers incorporated into the mirror rear shell allowing control of the shape by internal stress rather than by reaction on a structure. We present in this paper the roadmap we have built to bring these three disruptive technologies to technology readiness level 3. We will achieve this goal through design and realization of representative elements: segments of mirrors for optical quality verification, active optics implemented on representative mirror stacks to characterize the shape correction capabilities, and mechanical models for validation of the deployment concept. Accompanying these developments, a strong system activity will ensure that the ultimate goal of having an integrated system can be met, especially in terms of (a) scalability toward a larger structure, and (b) verification philosophy.

Published
2016
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42. A Process for Evaluating Parametric Models for Mechanical Systems Simulation : the Case of a Sailboat

Author

Lavigne, E., Piquemal, B., Bourdon, Adeline, Chesné, Simon, Guillou, Goulven, Babau, Jean-Philippe, MerConcept, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Lab-STICC_UBO_CACS_MOCS, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Institut Mines-Télécom [Paris] (IMT)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-Institut Mines-Télécom [Paris] (IMT)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO), Université de Brest (UBO)-Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université de Brest (UBO)-Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), and Institut Mines-Télécom [Paris] (IMT)

Subjects
[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2016

43. Absorbeurs de vibrations hybrides hyperstables

Author

Chesné, Simon, Collette, C, Dynamique et Contrôle des Structures (DCS), Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Department of Bio, Electro And Mechanical Systems (BEAMS), and Université libre de Bruxelles (ULB)

Subjects
[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph]
Abstract

International audience; L'hybridation des systèmes actifs et passifs est une voie en plein essor que ce soit pour l'isolation ou l'amortissement des structures. L'hybridation a pour objectif de combiner le meilleur des approches actives et passives. Les apports principaux sont généralement l'adaptabilité apportée au système passif initial mais également l' amélioration des performances a des couts énergétiques bien inférieurs aux versions purement actives. L'aspect fail-safe du système hybride est également un atout non négligeable dans le cadre des applications embarquées. Cependant certaines difficultés apparaissent lorsque l'on cherchè a coupler contrôle actif et contrôle passif au sein d'un même système mécanique notamment en terme de stabilité. On présente ici une loi de contrôle qui est une évolution du Direct Velocity Feedback appliquée aux absorbeurs de vibrations accordés. Deux pôles et deux zéros sont ajoutés a la loi de contrôle initiale, pour interagir avec la dynamique de la structure. L' intérêt de ces interactions est de modifier le lieu des pôles du système en boucle fermée afin de rendre le système contrôlé hyperstable. Les marges de gain et de phase sont ainsi infinies. L'absorbeur hybride développé dans cette étude est comparé a d'autres approches plus classiques en termes d' atténuation, de consommation et de débattement .

Published
2016

45. ENHANCED ACTIVE DAMPING OF FLEXIBLE STRUCTURES WITH INHERENTLY STABLE POWER PORTS

Author

Chesné, Simon, Milhomem, Ariston, Collette, Christophe, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Department of Bio, Electro And Mechanical Systems (BEAMS), Université libre de Bruxelles (ULB), and Chesne, Simon

Subjects
[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph], [PHYS.MECA.STRU] Physics [physics]/Mechanics [physics]/Structural mechanics [physics.class-ph]
Abstract

International audience; During the last three decades, several active damping strategies have been proposed, based on the so-called passivity concept, or equivalently, on the power port concept. One of them, known as Integral Force Feedback (IFF) is reviewed in this paper. Actually, the main drawback of the IFF is that high active damping is obtained at the cost of a degradation of the compliance at low frequency, compromising the capability of disturbance rejection. Classically, a trade-off between damping and stiffness can be reached by adequately high pass filtering the control signal. However, the high pass filter poles and zeros often interfere with the plant dynamics, which in turn compromises the guaranteed stability of the IFF. In this paper, a novel type of high pass filter is proposed. It is shown that this modification makes the controller unconditionally stable, and increases drastically the achievable modal damping. Analytic formulas are derived, and illustrated using simple numerical models. The characteristics of the proposed controller are discussed in terms of maximum modal damping and transmissibility.

Published
2015

47. Identification of time varying stiffness using derivative estimator and polynomial basis

Author

Chesné, Simon, Martel, F., Chochol, Catherine, Rancourt, Denis, Rémond, Didier, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and Rémond, Didier

Subjects
[SPI.MECA.STRU] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph], [SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of the structures [physics.class-ph]
Abstract

International audience; The identification of time varying parameters of mechanical systems is a typical case of inverse problem treated in engineering. Parameter variations have various origins (crack apparition/propagation, temperature variation, ice deposit, etc…) and can be sources of serious problems as well as good indicators for system monitoring. The detection and quantification of these variations is essential before any analysis is performed on the system. The present contribution is then dedicated to the identification of time varying mechanical parameters for vibrating structures (illustrated by a time varying rotational stiffness). In many identification techniques, space/time derivatives and noise sensitivity are recurring problems. Displacements (angle) and accelerations are necessary in the differential equation governing the mechanical behavior of the structure. In rotating systems, angular sensors are commonly used and the angle is directly measured but the acceleration has to be estimated. In the proposed approach, the time derivatives of the recorded signals are computed using the Lanczos’ generalized derivatives for higher orders. This kind of differentiation byintegration methods allows an accurate and robust estimation of the acceleration of the measured input. Thanks to these estimated derivatives, the differential equation of motion of the structure can be partially reconstructed at each time step. Then, using short sliding windows where the unknown parameter is fit by a polynomial function, the coefficients defining these functions are computed using a weighted least square estimate. The unknown parameter and its time variation are then estimated by association of these polynomial expansions. First, the approach is presented and tuned in simulation. Many parameters,including the length of the integration domain and the size of the polynomial expansion, have to be optimized through the analysis of simulated results. Then, the method is applied to experimental data obtained from an equilateral beam excited in torsion while one beam support location is changed over time, creating a time varying torsional stiffness (1-DOF mechanical system). Finally, approach and results areanalyzed and compared to another method based on the derivative formulation of the Chebyshev polynomial basis. This general method can as well be extended to system identification, structure identification, damage detection, etc

Published
2014

48. Control of an helicopter main gearbox active suspension system

Author

Rodriguez, Jonathan, Gaudiller, Luc, Chesné, Simon, Cranga, Paul, Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Airbus Helicopter, and Airbus [France]

Subjects
[PHYS.MECA.STRU]Physics [physics]/Mechanics [physics]/Mechanics of the structures [physics.class-ph], [SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of the structures [physics.class-ph]
Abstract

International audience; This paper considers the control of a helicopter gearbox electromagnetic suspension for a complete multibody model of the structure. As the new generation of helicopters includes variable engine RPM during flight, it becomes relevant to add active control in their suspension systems. Most of active system performances derive directly from the controller construction, its optimization to the system controlled and the disturbances expected. An investigation on a FXLMS control algorithm has been made to optimize it in terms of narrow band disturbance rejection. In this paper an active suspension based on DAVI principle is evaluated. Firstly, a multibody model is set up to estimate realistic acceleration levels inside the cabin. Then multiple controllers are tested, minimizing vibrations on different parts of the helicopter structure. The simulations tend to prove that it is possible to implement an effective active suspension with a low power actuator and obtain a significant vibration reduction level for a frequency bandwidth centered at the natural frequency of the original DAVI.

Published
2014

49. Modelling of soft generator combining electret and dielectric elastomer

Author

Jean-Mistral, Claire, Porter, Tomos, Gonon, Jérémie, Vu-Cong, T., Chesné, Simon, Sylvestre, A., Dynamique et Contrôle des Structures (DCS), Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne] (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Génie Electrique de Grenoble (G2ELab), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), and Jean-Mistral, C.

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2014

50. A development roadmap for critical technologies needed for TALC: a deployable 20m annular space telescope

Author

Sauvage, Marc, additional, Amiaux, Jérome, additional, Austin, James, additional, Bello, Mara, additional, Bianucci, Giovanni, additional, Chesné, Simon, additional, Citterio, Oberto, additional, Collette, Christophe, additional, Correia, Sébastien, additional, Durand, Gilles A., additional, Molinari, Sergio, additional, Pareschi, Giovanni, additional, Penfornis, Yann, additional, Sironi, Giorgia, additional, Valsecchi, Giuseppe, additional, Verpoort, Sven, additional, and Wittrock, Ulrich, additional

Published
2016
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