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Modelling and Analysis of Automobile Vibration System Based on Fuzzy Theory under Different Road Excitation Information

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  • Xue-wen Chen
  • Yue Zhou

Abstract

A fuzzy increment controller is designed aimed at the vibration system of automobile active suspension with seven degrees of freedom (DOF). For decreasing vibration, an active control force is acquired by created Proportion-Integration-Differentiation (PID) controller. The controller’s parameters are adjusted by a fuzzy increment controller with self-modifying parameters functions, which adopts the deviation and its rate of change of the body’s vertical vibration velocity and the desired value in the position of the front and rear suspension as the input variables based on 49 fuzzy control rules. Adopting Simulink, the fuzzy increment controller is validated under different road excitation, such as the white noise input with four-wheel correlation in time-domain, the sinusoidal input, and the pulse input of C-grade road surface. The simulation results show that the proposed controller can reduce obviously the vehicle vibration compared to other independent control types in performance indexes, such as, the root mean square value of the body’s vertical vibration acceleration, pitching, and rolling angular acceleration.

Suggested Citation

  • Xue-wen Chen & Yue Zhou, 2018. "Modelling and Analysis of Automobile Vibration System Based on Fuzzy Theory under Different Road Excitation Information," Complexity, Hindawi, vol. 2018, pages 1-9, January.
    • Handle: RePEc:hin:complx:2381568
    DOI: 10.1155/2018/2381568
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