Abstract
The aim of this paper is to design a fractional order proportional-integral-derivative controller (FOPIDC) for a vehicle suspension (VS) system to improve the ride comfort by absorbing the shocks due to a rough and uneven road. In this control strategy, the conventional proportional and integral controller (CPIC) is re-formulated with fractional orders of the integrator and differentiator to improve the control performance. The FOPIDC is a novel approach whose gains dynamically vary with respect to the error signal. The validation of the improved control performance of FOPIDC is established by comparative result investigation with other published control algorithms. The comparative results clearly reveal the better response of the suggested approach to control the oscillation of the VS system within a stable range with respect to the accuracy, robustness, and capability to control uncertainties.
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