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Static-Output-Feedback Based Robust Fuzzy wheelbase preview Control for Uncertain Active Suspensions With Time Delay and Finite Frequency Constraint

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IEEE/CAA Journal of Automatica Sinica 2021年第3期8卷 664-678页

作者： Wenfeng Li Zhengchao Xie Jing Zhao Pak Kin Wong Hui Wang Xiaowei Wang School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhouand Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced ManufacturingSouth China University of TechnologyGuangzhou 510641China Department of Electromechanical Engineering University of MacaoMacao 999078 Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing South China University of TechnologyGuangzhou 510641China Department of Electromechanical Engineering University of MacaoMacao 999078China School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou 510641China School of Mechanical Engineering and Automation Northeastern UniversityShenyang 110819China

This paper proposes a static-output-feedback based robust fuzzy wheelbase preview control algorithm for uncertain active suspensions with time delay and finite frequency ***,a Takagi-Sugeno(T-S)fuzzy augmented model is established to formulate the half-car active suspension system with consideration of time delay,sprung mass variation and wheelbase preview ***,in view of the resonation between human’s organs and vertical vibrations in the frequency range of 4–8 Hz,a finite frequency control criterion in terms of H∞norm is developed to improve ride ***,other mechanical constraints are also considered and satisfied via generalized H2 ***,in order to maintain the feasibility of the controller despite of some state variables are not online-measured,a two stage approach is adopted to derive a static output feedback ***,numerical simulation results illustrate the excellent performance of the proposed controller.

关键词： Active suspension finite frequency output feedback Takagi-Sugeno(T-S)fuzzy model time delay wheelbase preview

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