The Experts below are selected from a list of 345753 Experts worldwide ranked by ideXlab platform
Yann Le Gorrec - One of the best experts on this subject based on the ideXlab platform.
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Bouc-Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to 1 degree of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF, which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities that affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model, which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along this paper, the cases of underactuated, overactuated, and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a 3-DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the direct transfers and to minimize the Hysteresis of the cross-couplings.
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Bouc--Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner.
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to one degrees of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities which affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along the paper, the cases of under, over and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a three DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the directtransfers and to minimize the Hysteresis of the cross-couplings.
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Bouc–Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to 1 degree of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF, which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities that affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model, which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along this paper, the cases of underactuated, overactuated, and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a 3-DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the direct transfers and to minimize the Hysteresis of the cross-couplings.
Didace Habineza - One of the best experts on this subject based on the ideXlab platform.
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Bouc-Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to 1 degree of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF, which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities that affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model, which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along this paper, the cases of underactuated, overactuated, and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a 3-DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the direct transfers and to minimize the Hysteresis of the cross-couplings.
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Bouc--Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner.
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to one degrees of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities which affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along the paper, the cases of under, over and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a three DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the directtransfers and to minimize the Hysteresis of the cross-couplings.
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Bouc–Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to 1 degree of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF, which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities that affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model, which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along this paper, the cases of underactuated, overactuated, and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a 3-DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the direct transfers and to minimize the Hysteresis of the cross-couplings.
Dong-ho Kang - One of the best experts on this subject based on the ideXlab platform.
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on the current voltage Hysteresis in perovskite solar cells dependence on perovskite composition and methods to remove Hysteresis
Advanced Materials, 2019Co-Authors: Dong-ho Kang, Namgyu ParkAbstract:: Current-density-voltage (J-V) Hysteresis in perovskite solar cells (PSCs) is a critical issue because it is related to power conversion efficiency and stability. Although parameters affecting the Hysteresis have been already reported and reviewed, little investigation is reported on scan-direction-dependent J-V curves depending on perovskite composition. This review investigates J-V hysteric behaviors depending on perovskite composition in normal mesoscopic and planar structure. In addition, methodologies toward Hysteresis-free PSCs are proposed. There is a specific trend in Hysteresis in terms of J-V curve shape depending on composition. Ion migration combined with nonradiative recombination near interfaces plays a critical role in generating Hysteresis. Interfacial engineering is found to be an effective method to reduce the Hysteresis; however, bulk defect engineering is the most promising method to remove the Hysteresis. Among the studied methods, KI doping is proved to be a universal approach toward Hysteresis-free PSCs regardless of perovskite composition. It is proposed from the current studies that engineering of perovskite film near the electron transporting layer (ETL) and the hole transporting layer (HTL) is of vital importance for achieving Hysteresis-free PSCs and extremely high efficiency.
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On the Current–Voltage Hysteresis in Perovskite Solar Cells: Dependence on Perovskite Composition and Methods to Remove Hysteresis
Advanced Materials, 2019Co-Authors: Dong-ho KangAbstract:Abstract Current-density?voltage (J?V) Hysteresis in perovskite solar cells (PSCs) is a critical issue because it is related to power conversion efficiency and stability. Although parameters affecting the Hysteresis have been already reported and reviewed, little investigation is reported on scan-direction-dependent J?V curves depending on perovskite composition. This review investigates J?V hysteric behaviors depending on perovskite composition in normal mesoscopic and planar structure. In addition, methodologies toward Hysteresis-free PSCs are proposed. There is a specific trend in Hysteresis in terms of J?V curve shape depending on composition. Ion migration combined with nonradiative recombination near interfaces plays a critical role in generating Hysteresis. Interfacial engineering is found to be an effective method to reduce the Hysteresis; however, bulk defect engineering is the most promising method to remove the Hysteresis. Among the studied methods, KI doping is proved to be a universal approach toward Hysteresis-free PSCs regardless of perovskite composition. It is proposed from the current studies that engineering of perovskite film near the electron transporting layer (ETL) and the hole transporting layer (HTL) is of vital importance for achieving Hysteresis-free PSCs and extremely high efficiency.
Micky Rakotondrabe - One of the best experts on this subject based on the ideXlab platform.
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Bouc-Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to 1 degree of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF, which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities that affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model, which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along this paper, the cases of underactuated, overactuated, and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a 3-DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the direct transfers and to minimize the Hysteresis of the cross-couplings.
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Bouc--Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner.
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to one degrees of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities which affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along the paper, the cases of under, over and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a three DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the directtransfers and to minimize the Hysteresis of the cross-couplings.
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Bouc–Wen Modeling and Feedforward Control of Multivariable Hysteresis in Piezoelectric Systems: Application to a 3-DoF Piezotube Scanner
IEEE Transactions on Control Systems Technology, 2015Co-Authors: Didace Habineza, Micky Rakotondrabe, Yann Le GorrecAbstract:This paper is concerned with multivariable coupled hysteretic systems. The traditional Bouc-Wen monovariable Hysteresis model devoted to 1 degree of freedom (DoF) actuated systems is extended to model the Hysteresis in systems with multiple DoF, which typify strong cross-couplings. The proposed approach is able to model and to compensate for known Hysteresis nonlinearities that affect smart materials. First, after presenting the new multivariable Hysteresis Bouc-Wen model, a procedure of identification of its parameters is proposed. Then, we propose a multivariable compensator for the Hysteresis. The compensator is based on the combination of the inverse multiplicative structure with the model, which permits to avoid additional calculation of its parameters. Such advantage is essential when the number of DoF is high. All along this paper, the cases of underactuated, overactuated, and fully actuated hysteretic systems are discussed. Finally, the proposed method is used to model and to compensate for the Hysteresis in a 3-DoF piezoelectric tube actuator. The experimental results demonstrate its efficiency to linearize the Hysteresis in the direct transfers and to minimize the Hysteresis of the cross-couplings.
J A De Abreugarcia - One of the best experts on this subject based on the ideXlab platform.
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tracking control of a piezoceramic actuator with Hysteresis compensation using inverse preisach model
IEEE-ASME Transactions on Mechatronics, 2005Co-Authors: Gangbing Song, Jinqiang Zhao, Xiaoqin Zhou, J A De AbreugarciaAbstract:This paper presents the classical Preisach Hysteresis modeling and tracking control of a curved pre-stressed piezoceramic patch actuator system with severe Hysteresis. The actuator is also flexible with very small inherent damping. It has potential applications in active antennas. A series of tests are conducted to study the Hysteresis properties of the piezoceramic actuator system. The numerical expressions of the classical Preisach model for different input variations are presented. The classical Preisach model is applied to simulate the static Hysteresis behavior of the system. Higher order Hysteresis reversal curves predicted by the classical Preisach model are verified experimentally. The good agreement found between the measured and predicted curves showed that the classical Preisach model is an effective mean for modeling the Hysteresis of the piezoceramic actuator system. Subsequently, the inverse classical Preisach model is established and applied to cancel the Hysteresis the piezoceramic actuator system for the real-time microposition tracking control. In order to improve the control accuracy and to increase damping of the actuator system, a cascaded PD/lead-lag feedback controller is designed with consideration of the dynamics of the actuator. In the experiments, two cases are considered, control with major loop Hysteresis compensation, and control with minor loop Hysteresis compensation. Experimental results show that RMS tracking errors are reduced by 50% to 70% if the Hysteresis compensation is added in the feedforward path in both cases. Therefore, Hysteresis compensation with the feedback controller greatly improves the tracking control accuracy of the piezoceramic actuator.
