磁流变悬架系统的非线性动力学分析与混沌控制

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Abstract Here, a magneto-rheological (MR) suspension dynamic system was established based on the modified MR damper Bouc-Wen force-velocity (F-v) model. The possibility for the system having chaotic motion was found according to the nonlinear system stability theory. The global bifurcation graph and Lyapunov exponent spectrum diagram were deduced through numerical calculation to obtain the system’s complex nonlinear dynamic behaviors, i.e., periodic oscillation, quasi-periodic one and chaotic motion alternately appearing with the variation of parameters, and an evolution process from period-doubling bifurcation, saddle-node one and reverse period-doubling one to chaos. Taking an ideal linear model as the reference, the sliding mode control method based on motion state tracking was proposed to effectively stabilize the chaotic motion of the system to a stable periodic state. 

Received: 05 January 2018 Published: 28 June 2019

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	Articles by authors
	LIU Jian
	WANG Enrong
	YAN Wei
	ZHANG Hailong

Cite this article:

LIU Jian,WANG Enrong,YAN Wei, et al. Nonlinear dynamic analysis and chaos control of a MR suspension system[J]. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(13): 215-222.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2019/V38/I13/215

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