Terminal sliding mode control for full vehicle active suspension systems

• DOI: 10.1007/s12206-018-0541-x
• Publication Date: 2018-06-21T04:17:06Z
• Authors: Miaomiao Du; Dingxuan Zhao; Bin Yang; Lili Wang
• Keywords: Terminal sliding mode; Robustness; Active suspension; Suspension

In current study, a terminal sliding mode control approach different from the conventional sliding mode control is proposed for active suspension system, which has an ability to reach the sliding surface in a finite time to achieve a high control accuracy. A full vehicle active suspension model is adopted with consideration of system uncertainties. The terminal sliding mode controller (TSMC) is systematically designed to force motion trajectories of vehicle body to accurately track the ideal reference model, and the controller parameters are tuned by a novel kidney-inspired algorithm (KA) for better control performance. The thought of designing an adaptive scheme for the reference model is one of the main contribution of this work. Simulation results clearly show the strength of adaptive scheme. The effectiveness and the strong robustness in stabilizing the attitude of the vehicle and improving the ride comfort are the main positive features of the proposed TSMC.