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A Hybrid Control Algorithm Fuzzy-PI with the Second Derivative of the Error Signal for an Active Suspension System

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  • Duc Ngoc Nguyen
  • Tuan Anh Nguyen
  • Xingling Shao

Abstract

A vehicle’s oscillation can be improved by using an active suspension system to replace the conventional passive suspension system. The active suspension system operates on the control signal from the controller. This paper introduces the Fuzzy-PI integrated control algorithm to control the system’s efficiency. The Fuzzy algorithm adjusts the KP and KI parameters of the controller. This response depends on the oscillation state of the vehicle. A quarter model with a hydraulic actuator was used in this research. The simulation process takes place in the MATLAB-Simulink environment. In the first case, the maximum and average values of displacement and acceleration of the sprung mass when the vehicle uses the Fuzzy-PI algorithm are only 2.68%, 1.34%, and 1.65%, 0.66%, respectively, compared to the situation of vehicles using the passive suspension system. For the second case, these values are 3.33%, 1.69%, and 2.01%, 0.73%, respectively. As a result, the vehicle’s stability and comfort are greatly enhanced when the integrated controller is used. Besides, the change of KP and KI parameters is also completely suitable for the vehicle’s driving conditions. This research only leads to calculations and simulations; the experimental process is expected to occur soon.

Suggested Citation

  • Duc Ngoc Nguyen & Tuan Anh Nguyen & Xingling Shao, 2022. "A Hybrid Control Algorithm Fuzzy-PI with the Second Derivative of the Error Signal for an Active Suspension System," Mathematical Problems in Engineering, Hindawi, vol. 2022, pages 1-10, August.
    • Handle: RePEc:hin:jnlmpe:3525609
    DOI: 10.1155/2022/3525609
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