Design of optimal sliding mode control system for PMLSM

Abstract To enhance the responsiveness and resilience against disturbances in the speed regulation system of Permanent Magnet Linear Synchronous Motors (PMLSM), an advanced control approach leveraging optimized sliding mode control is introduced. Initially, a foundation is laid by designing a PI-based speed control system and a conventional sliding mode control system within the framework of PMLSM vector control. Simulation models are then constructed to validate the efficacy of these systems. Subsequently, focusing on the traditional sliding mode controller, optimizations are implemented to refine the sliding mode convergence dynamics and the switching function, leading to the development of an optimal sliding mode controller model. Ultimately, simulation tests confirm that this optimized sliding mode speed controller achieves seamless transition without overshoot, swift response times, and robust disturbance rejection capabilities. Its performance in terms of responsiveness and anti-interference surpasses both the PI controller and the conventional sliding mode speed controller.