Adaptive Nonsingular Terminal Sliding Mode Control Strategy for PMSC

The structure and principle of permanent magnet slip clutch (PMSC) which was the important component of P-ECHPS was introduced, and the speed adjustment model of PMSC was set up too. PMSC output speed what is equivalent to steering pump speed should have the performance with great response agility and it has many uncertainties in the process of steering for heavy-duty vehicles. To tackle these problems, nonsingular terminal sliding mode (NTSM) control strategy combined with adaptive control was adopted. The simulation results indicate that adaptive NTSM control strategy is highly effective and accurate, and it has better anti-interference ability. The tracking performance of adaptive NTSM is greater than sliding mode control (SMC) and PID control, and the convergence rate increased by 48% than SMC.