Parameter-dependent vibration-attenuation controller design for electro-hydraulic actuated linear structural systems |
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Authors: | Falu Weng Weijie Mao |
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Institution: | 1. State Key Lab of Industrial Control Technology, Institute of Cyber-Systems and Control, Zhejiang University, Hangzhou, 310027, China 2. School of Mechanical and Electrical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
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Abstract: | The problem of robust active vibration control for a class of electro-hydraulic actuated structural systems with time-delay
in the control input channel and parameter uncertainties appearing in all the mass, damping and stiffness matrices is investigated
in this paper. First, by introducing a linear varying parameter, the nonlinear system is described as a linear parameter varying
(LPV) model. Second, based on this LPV model, an LMI-based condition for the system to be asymptotically stabilized is deduced.
By solving these LMIs, a parameter-dependent controller is established for the closedloop system to be stable with a prescribed
level of disturbance attenuation. The condition is also extended to the uncertain case. Finally, some numerical simulations
demonstrate the satisfying performance of the proposed controller. |
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Keywords: | structural system electro-hydraulic servo system robust stabilization vibration attenuation parameterdependent controller |
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