Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Control of chaotic active suspension system in vehicle using Fuzzy-Sliding Delay feedback

Authors
1 Faculty of Industrial and Mechanical Engineering, Qazvin Islamic Azad University
2 Industrial and Mechanical engineering faculty, Qazvin islamic Azad University
Abstract
In this paper, the chaotic dynamic analysis along with chaos controller of an active suspension in vehicle has been studied. The unstable periodic orbits of the system are stabilized using the developed delay feedback control algorithm based on the fuzzy sliding mode system. Firstly, the equations of model are derived via Newton-Euler rules and then, power spectrum density and bifurcation diagrams have been used to confirm chaos in the system. Variations of the control parameters in the bifurcation diagrams demonstrate the changes of system behavior from the periodic to the irregular chaotic responses.
Finally, to eliminate the chaos in the vertical dynamics of vehicle, a novel fuzzy sliding delay feedback control algorithm is developed on the active suspension. Using fuzzy logic, the controller gain of the sliding delay feedback control is online estimated that is caused to reject the chattering phenomenon in the sliding mode algorithm beside the improvement of the responses. Simulation results of the control system depict a reduction of settling time and energy consumption along with eliminating the overshoots and chaotic vibrations.
Keywords

Subjects


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  • Receive Date 13 June 2020
  • Revise Date 03 October 2020
  • Accept Date 05 January 2021