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LI Zhong-ji, DAI Huan-yun, CENG Jing. Fuzzy semi-active control of railway vehicle with magnetorheological dampers[J]. Journal of Traffic and Transportation Engineering, 2014, 14(5): 43-50.
Citation: LI Zhong-ji, DAI Huan-yun, CENG Jing. Fuzzy semi-active control of railway vehicle with magnetorheological dampers[J]. Journal of Traffic and Transportation Engineering, 2014, 14(5): 43-50.
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Fuzzy semi-active control of railway vehicle with magnetorheological dampers

  • 1.

    Institute of Science and Technology, China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, Sichuan, China

  • 2.

    State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

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  • Author Bio:

    LI Zhong-ji(1983-), male, engineer, PhD, +86-28-86445021, lizhongji@live.com

  • Received Date: 2014-05-20
  • Publish Date: 2014-10-25
    Abstract
  • The control methods of semi-active suspension system for railway vehicle with magnetorheological (MR) dampers were studied.The multi-body dynamics model with 50 freedom degrees of railway vehicle and the Spencer model of MR damper were set up.The fuzzy controller based on the feedback of velocity and acceleration was designed.The inverse model of MR damper predicting the control current was built by using the voltage control function and the separating method of hysteresis characteristic.With the simulation method, the characteristic of fuzzy semi-active suspension system with MR dampers was studied and the dynamics performance of vehicle with semi-active suspension system was analyzed.Simulation result shows that when the fuzzy control method based on the inverse model is used, the actual damping force can track accurately the desired value given by the controller.Compared with the passive suspension system, the fuzzy semi-active suspension with MR dampers can reduce vehicle vibration in the range of 1-10 Hz.When vehicle speed is 250 km·h-1, vehicle vibration acceleration decreases by 53.3%.The riding comfort index increases by 6%-9% when the speed of vehicle ranges from 100 km·h-1 to 300 km·h-1.

     

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