吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (3): 701-708.doi: 10.13229/j.cnki.jdxbgxb201703002

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Vibration isolation performance of energy-regenerative semi-active suspension with variable stiffness and damping

WANG Jun-nian1, YE Tao2, SUN Wen1, WANG Qing-nian1   

  1. 1.State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
    2.Department of Mechanical Engineering, National University of Singapore, Singapore 117575,Singapore
  • Online:2017-05-20 Published:2017-05-20

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Abstract: The vibration isolation performance of energy-regenerative semi-active suspension with variable stiffness and damping is investigated. A quarter car model with one degree of freedom with semi-active suspension model is used as the research subject. First, the magnitude frequency response characteristics of the model to road bumpiness excitation and external force excitation are analyzed. Then, a simple switch on-off damping control algorithm is designed based on the skyhook control method. Nine different on/off control modes are defined subsequently. Finally, with the input of sinusoidal function and random vibration, the control performances are simulated and compared using Matlab/Simulink. The results show that the control modes, which have on-off status for both variable dampers, lead the suspension to have excellent performance of vibration isolation.

Key words: automotive engineering, variable stiffness anddamping, semi-active suspension, on/off damping control

CLC Number: 

  • U469.7
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