Robust H control for vehicle seat suspension systems with stochastic disturbance |
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| Authors: | YANG Cheng yun FU Jie and YU Miao |
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| Institution: | College of Mechanical Engineering, Ministry of Education, Chongqing University, Chongqing 400044, P.R. China;Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Chongqing 400044, P.R. China;Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, Chongqing University, Chongqing 400044, P.R. China |
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| Abstract: | The paper proposes the design method of robust H controller of vehicle seat suspension system. The dynamic model of seat suspension is developed,and the parameters uncertainties (mass, stiffness, damping) and stochastic vibration are introduced into the model system. Based on stochastic differential theory and Lyapunov functional, a semi controller is designed, and the controller parameters are solved by linear matrix inequality (LMI) which guarantees H performance index. The simulation results in time domain and frequency domain show that the controller designed for parameter uncertainties and stochastic vibration can attenuate the vertical acceleration of suspension system and improve riding comfort of human. |
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