The Experts below are selected from a list of 16320 Experts worldwide ranked by ideXlab platform
Charles Pezerat - One of the best experts on this subject based on the ideXlab platform.
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Improvement of transmission loss of a double panel by using active control with a virtual Modal Mass
Journal of Intelligent Material Systems and Structures, 2013Co-Authors: Vincent Lhuillier, Luc Gaudiller, Simon Chesne, Charles PezeratAbstract:In this article, Modal feedback control is proposed to reduce the sound transmission through finite double panels using lead zirconate titanate ceramic sensors and actuators bonded to the structure. Active control allows adding virtual Modal damping and Mass to the structure by the use of Modal velocities and accelerations. In a first step, the equations describing the structure, the actuators, the acoustic excitation, and the acoustic radiation are detailed. Next, the state space formulation of the smart structure is presented. In a second step, the implementation of active control is illustrated through the use of numerical examples. Finally, simulations are performed using two actuators, allowing five modes to be controlled. The transmission loss factors of the controlled and uncontrolled structure are shown as a function of the required command voltage. These results are also compared with those achieved using other vibroacoustic control techniques.
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Improvement of Transmission Loss Using Active Control with Virtual Modal Mass
Advances in Acoustics and Vibration, 2008Co-Authors: Vincent Lhuillier, Luc Gaudiller, Charles Pezerat, Simon ChesneAbstract:This paper deals with an alternative Modal active control approach to reduce sound transmission through a structure excited by an acoustic wave. Active control makes it possible to conserve lightness while improving acoustic performances. “Modal Mass damping control” is proposed for light and small structures having slight Modal overlap. The aim of this control is to modify the Modal distribution of high radiation efficiency modes with active Modal virtual Mass and active Modal damping. The active virtual Mass effects lower eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. An application of this concept is presented in a simple smart structure. It is harmonically excited on large bandwidth by a normal acoustic plane wave. Results obtained by active Modal virtual Mass and damping control are compared to other Modal control approaches.
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Improvement of acoustic transmission loss by active Modal Mass control
The Journal of the Acoustical Society of America, 2008Co-Authors: Vincent Lhuillier, Charles Pezerat, Simon Chesne, Luc GaudillerAbstract:This paper deals with an alternative Modal control approach to reduce the sound transmission through a structure excited by an acoustic wave. Active control enables to conserve the characteristics of lightness while improving acoustic performances. For light and small structures having small Modal overlap, the "Modal Mass damping control" is proposed. The aim of this control is to modify the Modal distribution of high radiation efficiency modes with Modal virtual Mass and Modal virtual damping. The interest of this approach is that at low frequencies, the active virtual Mass effects shift down eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. The Modal virtual Mass control appears to be a good complement to a standard damping control which is exclusively efficient at resonances. In order to detail the concept of the proposed method, an application is presented on a double panel equipped with piezoelectric patches. The structure is excited by ...
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ACOUSTICS2008/2345 Improvement of acoustic transmission loss by active Modal Mass control
2008Co-Authors: Vincent Lhuillier, Charles Pezerat, Simon Chesne, Luc GaudillerAbstract:This paper deals with an alternative Modal control approach to reduce the sound transmission through a structure excited by an acoustic wave. Active control enables to conserve the characteristics of lightness while improving acoustic performances. For light and small structures having small Modal overlap, the ”Modal Mass damping control” is proposed. The aim of this control is to modify the Modal distribution of high radiation eciency modes with Modal virtual Mass and Modal virtual damping. The interest of this approach is that at low frequencies, the active virtual Mass eects shift down eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. The Modal virtual Mass control appears to be a good complement to a standard damping control which is exclusively ecient at resonances. In order to detail the concept of the proposed method, an application is presented on a double panel equipped with piezoelectric patches. The structure is excited by a distributive acoustic plane wave. Acoustic transmission loss factors of the simulated controlled and the non-controlled smart structure are shown and optimization is discussed.
Vincent Lhuillier - One of the best experts on this subject based on the ideXlab platform.
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Improvement of transmission loss of a double panel by using active control with a virtual Modal Mass
Journal of Intelligent Material Systems and Structures, 2013Co-Authors: Vincent Lhuillier, Luc Gaudiller, Simon Chesne, Charles PezeratAbstract:In this article, Modal feedback control is proposed to reduce the sound transmission through finite double panels using lead zirconate titanate ceramic sensors and actuators bonded to the structure. Active control allows adding virtual Modal damping and Mass to the structure by the use of Modal velocities and accelerations. In a first step, the equations describing the structure, the actuators, the acoustic excitation, and the acoustic radiation are detailed. Next, the state space formulation of the smart structure is presented. In a second step, the implementation of active control is illustrated through the use of numerical examples. Finally, simulations are performed using two actuators, allowing five modes to be controlled. The transmission loss factors of the controlled and uncontrolled structure are shown as a function of the required command voltage. These results are also compared with those achieved using other vibroacoustic control techniques.
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Improvement of Transmission Loss Using Active Control with Virtual Modal Mass
Advances in Acoustics and Vibration, 2008Co-Authors: Vincent Lhuillier, Luc Gaudiller, Charles Pezerat, Simon ChesneAbstract:This paper deals with an alternative Modal active control approach to reduce sound transmission through a structure excited by an acoustic wave. Active control makes it possible to conserve lightness while improving acoustic performances. “Modal Mass damping control” is proposed for light and small structures having slight Modal overlap. The aim of this control is to modify the Modal distribution of high radiation efficiency modes with active Modal virtual Mass and active Modal damping. The active virtual Mass effects lower eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. An application of this concept is presented in a simple smart structure. It is harmonically excited on large bandwidth by a normal acoustic plane wave. Results obtained by active Modal virtual Mass and damping control are compared to other Modal control approaches.
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Improvement of acoustic transmission loss by active Modal Mass control
The Journal of the Acoustical Society of America, 2008Co-Authors: Vincent Lhuillier, Charles Pezerat, Simon Chesne, Luc GaudillerAbstract:This paper deals with an alternative Modal control approach to reduce the sound transmission through a structure excited by an acoustic wave. Active control enables to conserve the characteristics of lightness while improving acoustic performances. For light and small structures having small Modal overlap, the "Modal Mass damping control" is proposed. The aim of this control is to modify the Modal distribution of high radiation efficiency modes with Modal virtual Mass and Modal virtual damping. The interest of this approach is that at low frequencies, the active virtual Mass effects shift down eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. The Modal virtual Mass control appears to be a good complement to a standard damping control which is exclusively efficient at resonances. In order to detail the concept of the proposed method, an application is presented on a double panel equipped with piezoelectric patches. The structure is excited by ...
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ACOUSTICS2008/2345 Improvement of acoustic transmission loss by active Modal Mass control
2008Co-Authors: Vincent Lhuillier, Charles Pezerat, Simon Chesne, Luc GaudillerAbstract:This paper deals with an alternative Modal control approach to reduce the sound transmission through a structure excited by an acoustic wave. Active control enables to conserve the characteristics of lightness while improving acoustic performances. For light and small structures having small Modal overlap, the ”Modal Mass damping control” is proposed. The aim of this control is to modify the Modal distribution of high radiation eciency modes with Modal virtual Mass and Modal virtual damping. The interest of this approach is that at low frequencies, the active virtual Mass eects shift down eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. The Modal virtual Mass control appears to be a good complement to a standard damping control which is exclusively ecient at resonances. In order to detail the concept of the proposed method, an application is presented on a double panel equipped with piezoelectric patches. The structure is excited by a distributive acoustic plane wave. Acoustic transmission loss factors of the simulated controlled and the non-controlled smart structure are shown and optimization is discussed.
Luc Gaudiller - One of the best experts on this subject based on the ideXlab platform.
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Improvement of transmission loss of a double panel by using active control with a virtual Modal Mass
Journal of Intelligent Material Systems and Structures, 2013Co-Authors: Vincent Lhuillier, Luc Gaudiller, Simon Chesne, Charles PezeratAbstract:In this article, Modal feedback control is proposed to reduce the sound transmission through finite double panels using lead zirconate titanate ceramic sensors and actuators bonded to the structure. Active control allows adding virtual Modal damping and Mass to the structure by the use of Modal velocities and accelerations. In a first step, the equations describing the structure, the actuators, the acoustic excitation, and the acoustic radiation are detailed. Next, the state space formulation of the smart structure is presented. In a second step, the implementation of active control is illustrated through the use of numerical examples. Finally, simulations are performed using two actuators, allowing five modes to be controlled. The transmission loss factors of the controlled and uncontrolled structure are shown as a function of the required command voltage. These results are also compared with those achieved using other vibroacoustic control techniques.
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Improvement of Transmission Loss Using Active Control with Virtual Modal Mass
Advances in Acoustics and Vibration, 2008Co-Authors: Vincent Lhuillier, Luc Gaudiller, Charles Pezerat, Simon ChesneAbstract:This paper deals with an alternative Modal active control approach to reduce sound transmission through a structure excited by an acoustic wave. Active control makes it possible to conserve lightness while improving acoustic performances. “Modal Mass damping control” is proposed for light and small structures having slight Modal overlap. The aim of this control is to modify the Modal distribution of high radiation efficiency modes with active Modal virtual Mass and active Modal damping. The active virtual Mass effects lower eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. An application of this concept is presented in a simple smart structure. It is harmonically excited on large bandwidth by a normal acoustic plane wave. Results obtained by active Modal virtual Mass and damping control are compared to other Modal control approaches.
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Improvement of acoustic transmission loss by active Modal Mass control
The Journal of the Acoustical Society of America, 2008Co-Authors: Vincent Lhuillier, Charles Pezerat, Simon Chesne, Luc GaudillerAbstract:This paper deals with an alternative Modal control approach to reduce the sound transmission through a structure excited by an acoustic wave. Active control enables to conserve the characteristics of lightness while improving acoustic performances. For light and small structures having small Modal overlap, the "Modal Mass damping control" is proposed. The aim of this control is to modify the Modal distribution of high radiation efficiency modes with Modal virtual Mass and Modal virtual damping. The interest of this approach is that at low frequencies, the active virtual Mass effects shift down eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. The Modal virtual Mass control appears to be a good complement to a standard damping control which is exclusively efficient at resonances. In order to detail the concept of the proposed method, an application is presented on a double panel equipped with piezoelectric patches. The structure is excited by ...
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ACOUSTICS2008/2345 Improvement of acoustic transmission loss by active Modal Mass control
2008Co-Authors: Vincent Lhuillier, Charles Pezerat, Simon Chesne, Luc GaudillerAbstract:This paper deals with an alternative Modal control approach to reduce the sound transmission through a structure excited by an acoustic wave. Active control enables to conserve the characteristics of lightness while improving acoustic performances. For light and small structures having small Modal overlap, the ”Modal Mass damping control” is proposed. The aim of this control is to modify the Modal distribution of high radiation eciency modes with Modal virtual Mass and Modal virtual damping. The interest of this approach is that at low frequencies, the active virtual Mass eects shift down eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. The Modal virtual Mass control appears to be a good complement to a standard damping control which is exclusively ecient at resonances. In order to detail the concept of the proposed method, an application is presented on a double panel equipped with piezoelectric patches. The structure is excited by a distributive acoustic plane wave. Acoustic transmission loss factors of the simulated controlled and the non-controlled smart structure are shown and optimization is discussed.
Simon Chesne - One of the best experts on this subject based on the ideXlab platform.
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Improvement of transmission loss of a double panel by using active control with a virtual Modal Mass
Journal of Intelligent Material Systems and Structures, 2013Co-Authors: Vincent Lhuillier, Luc Gaudiller, Simon Chesne, Charles PezeratAbstract:In this article, Modal feedback control is proposed to reduce the sound transmission through finite double panels using lead zirconate titanate ceramic sensors and actuators bonded to the structure. Active control allows adding virtual Modal damping and Mass to the structure by the use of Modal velocities and accelerations. In a first step, the equations describing the structure, the actuators, the acoustic excitation, and the acoustic radiation are detailed. Next, the state space formulation of the smart structure is presented. In a second step, the implementation of active control is illustrated through the use of numerical examples. Finally, simulations are performed using two actuators, allowing five modes to be controlled. The transmission loss factors of the controlled and uncontrolled structure are shown as a function of the required command voltage. These results are also compared with those achieved using other vibroacoustic control techniques.
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Improvement of Transmission Loss Using Active Control with Virtual Modal Mass
Advances in Acoustics and Vibration, 2008Co-Authors: Vincent Lhuillier, Luc Gaudiller, Charles Pezerat, Simon ChesneAbstract:This paper deals with an alternative Modal active control approach to reduce sound transmission through a structure excited by an acoustic wave. Active control makes it possible to conserve lightness while improving acoustic performances. “Modal Mass damping control” is proposed for light and small structures having slight Modal overlap. The aim of this control is to modify the Modal distribution of high radiation efficiency modes with active Modal virtual Mass and active Modal damping. The active virtual Mass effects lower eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. An application of this concept is presented in a simple smart structure. It is harmonically excited on large bandwidth by a normal acoustic plane wave. Results obtained by active Modal virtual Mass and damping control are compared to other Modal control approaches.
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Improvement of acoustic transmission loss by active Modal Mass control
The Journal of the Acoustical Society of America, 2008Co-Authors: Vincent Lhuillier, Charles Pezerat, Simon Chesne, Luc GaudillerAbstract:This paper deals with an alternative Modal control approach to reduce the sound transmission through a structure excited by an acoustic wave. Active control enables to conserve the characteristics of lightness while improving acoustic performances. For light and small structures having small Modal overlap, the "Modal Mass damping control" is proposed. The aim of this control is to modify the Modal distribution of high radiation efficiency modes with Modal virtual Mass and Modal virtual damping. The interest of this approach is that at low frequencies, the active virtual Mass effects shift down eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. The Modal virtual Mass control appears to be a good complement to a standard damping control which is exclusively efficient at resonances. In order to detail the concept of the proposed method, an application is presented on a double panel equipped with piezoelectric patches. The structure is excited by ...
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ACOUSTICS2008/2345 Improvement of acoustic transmission loss by active Modal Mass control
2008Co-Authors: Vincent Lhuillier, Charles Pezerat, Simon Chesne, Luc GaudillerAbstract:This paper deals with an alternative Modal control approach to reduce the sound transmission through a structure excited by an acoustic wave. Active control enables to conserve the characteristics of lightness while improving acoustic performances. For light and small structures having small Modal overlap, the ”Modal Mass damping control” is proposed. The aim of this control is to modify the Modal distribution of high radiation eciency modes with Modal virtual Mass and Modal virtual damping. The interest of this approach is that at low frequencies, the active virtual Mass eects shift down eigen frequencies to less audible frequency range while reducing vibration amplitudes in a broad frequency range. The Modal virtual Mass control appears to be a good complement to a standard damping control which is exclusively ecient at resonances. In order to detail the concept of the proposed method, an application is presented on a double panel equipped with piezoelectric patches. The structure is excited by a distributive acoustic plane wave. Acoustic transmission loss factors of the simulated controlled and the non-controlled smart structure are shown and optimization is discussed.
Kouhei Ohnishi - One of the best experts on this subject based on the ideXlab platform.
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precise position force hybrid control with Modal Mass decoupling and bilateral communication between different structures
IEEE Transactions on Industrial Informatics, 2011Co-Authors: Sho Sakaino, T. Sato, Kouhei OhnishiAbstract:In this study, we achieve haptic communication between different structures. In haptic communication, tactile sensation is transmitted to a remote place by cooperating robots. Conventional haptic communication is implemented under the assumption that the Masses of the actuators are equal. We have found that haptic communication system is a kind of position/force hybrid control system and that it is not necessary to follow that assumption. In addition, exact modeling of haptic communication system and decoupling of tasks are essential for highly precise haptic communication. First, we describe the kinetic and dynamic behaviors of haptic communication system for cardiac surgery. The deterioration of haptic performance is shown to depend on an interference term, due to off-diagonal parameters in the Modal Mass matrix. Second, we propose a novel hybrid controller for the decoupling of the responses, and we analyze its performance, stability, and robustness. Simulations and experiments toward cardiac surgery are shown, and the effectiveness of the proposed method is verified.
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Precise Position/Force Hybrid Control With Modal Mass Decoupling and Bilateral Communication Between Different Structures
IEEE Transactions on Industrial Informatics, 2011Co-Authors: Sho Sakaino, T. Sato, Kouhei OhnishiAbstract:In this study, we achieve haptic communication between different structures. In haptic communication, tactile sensation is transmitted to a remote place by cooperating robots. Conventional haptic communication is implemented under the assumption that the Masses of the actuators are equal. We have found that haptic communication system is a kind of position/force hybrid control system and that it is not necessary to follow that assumption. In addition, exact modeling of haptic communication system and decoupling of tasks are essential for highly precise haptic communication. First, we describe the kinetic and dynamic behaviors of haptic communication system for cardiac surgery. The deterioration of haptic performance is shown to depend on an interference term, due to off-diagonal parameters in the Modal Mass matrix. Second, we propose a novel hybrid controller for the decoupling of the responses, and we analyze its performance, stability, and robustness. Simulations and experiments toward cardiac surgery are shown, and the effectiveness of the proposed method is verified.
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Modal transformation for bilateral control and co-operational robot motion - Kinematics and dynamics -
2009 IEEE International Conference on Industrial Technology, 2009Co-Authors: Sho Sakaino, Tomoya Sato, Kouhei OhnishiAbstract:In this paper, Modal transform method for cooperation working is proposed. With this method, the work is simply described by Modal Mass and arbitral number and location of robots are able to be controlled by conventional hybrid controller. Furthermore, rotation by linear actuators, one of the most important propositions in this research, is considered. Position, angle, force and torque are transformed into generalized coordinate, Modal space, and geometric relations and dynamics are described. Validity of the proposed method was confirmed by an experiment.
