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Robust Non-fragile H∞ Optimum Control for Active Suspension Systems with Time-varying Actuator Delay
Wenfeng Li1,2; Zhengchao Xie1,2; Pak Kin Wong3; Yucong Cao4; Xingqi Hua5; Jing Zhao2,3
2019-01-17
Source PublicationJournal of Vibration and Control
ISSN1077-5463
Abstract

The active suspension has drawn considerable attention due to its superiority in improving the vehicle vertical dynamics. This paper investigates robust nonfragile H optimal control for the vehicle active suspension with time-varying actuator delay. Firstly, the dynamic equation of an active suspension system with actuator delay is established in terms of the main performance objectives, that is, ride comfort, handling ability, and road holding. Then, a robust nonfragile H optimal controller is proposed to deal with the problem of active suspension control with time delay and actuator uncertainty, which is based on Lyapunov theory, convex optimization, and the linear matrix inequality approach. Finally, a quarter-car test rig is used for an experiment to illustrate the effectiveness of the proposed controller. Simulation and experimental results demonstrate that the proposed controller can ensure the asymptotic stability of the closed-loop system with bounded time-varying actuator delay, while managing the tradeoff between the conflicting performances and achieving performance optimization for the active suspension.

KeywordActive Suspension Actuator Delay H∞ Control Convex Optimization Quarter-car Test Rig
DOIhttps://doi.org/10.1177/1077546319857338
Language英语
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Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
Corresponding AuthorZhengchao Xie
Affiliation1.School of Mechanical and Automotive Engineering, South China University of Technology, People’s Republic of China
2.Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, South China University of Technology, People's Republic of China
3.Department of Electromechanical Engineering, University of Macau, Macau
4.Automotive Engineering Institute, Guangzhou Automobile Group Co., Ltd, People’s Republic of China
5.Department of Automotive Engineering, Guizhou University, People’s Republic of China
Recommended Citation
GB/T 7714
Wenfeng Li,Zhengchao Xie,Pak Kin Wong,et al. Robust Non-fragile H∞ Optimum Control for Active Suspension Systems with Time-varying Actuator Delay[J]. Journal of Vibration and Control,2019.
APA Wenfeng Li,Zhengchao Xie,Pak Kin Wong,Yucong Cao,Xingqi Hua,&Jing Zhao.(2019).Robust Non-fragile H∞ Optimum Control for Active Suspension Systems with Time-varying Actuator Delay.Journal of Vibration and Control.
MLA Wenfeng Li,et al."Robust Non-fragile H∞ Optimum Control for Active Suspension Systems with Time-varying Actuator Delay".Journal of Vibration and Control (2019).
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