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H. Metered, M. Kozek, Z. Sika:
"Vibration control of active vehicle suspension using fuzzy based sliding surface";
Talk: 19th International Conference on Circuits, Systems, Communications and Computers, (CSCC 2015), Zakynthos Island, Greece (invited); 2015-07-16 - 2015-07-20; in: "CSCC 2015", (2015).

Fuzzy based sliding surface (FBSS) control algorithm is a nonlinear control method that adjusts the dynamics of linear and nonlinear systems by use of a discontinuous control signal. Up to date, fuzzy logic control (FLC) technique has used as one of the most common and successful control algorithm in vehicle suspension. This paper introduces an investigation into the use of an FBSS controller for active suspension systems to enhance the ride quality and road holding. The proposed control algorithm consists of a sliding surface that depends on the ideal sky-hook system behavior and a FLC to determine the variable actuator force. A mathematical model and the equations of motion of the quarter active suspension system are investigated and simulated using Matlab/Simulink software. The proposed active vehicle suspension is compared with the passive system. Suspension performance is assessed in both time and frequency domains, to verify the success of the FBSS controller. Also, uncertainty analysis due to the increased of sprung mass and depreciated of suspension stiffness and damping is also investigated in this paper. The simulated results reveal that the proposed controller using FBSS provides a significant enhancement of ride quality and road holding.

Active vehicle suspension, Fuzzy logic control, Ideal sky-hook model, Sliding surface, and Vibration control