Sliding mode control of the planar switched reluctance motor for interference suppression

This paper presents a sliding mode control (SMC) of the emerging planar switched reluctance motor (PSRM) for precise positioning being capable of interference suppression. First, the mechanical structure, system structure, and mathematical model with known parameters obtained by a forgetting factor recursive least-squares algorithm are given sequentially. Then, the switching function and reaching law of the SMC are determined. The control law is further derived for the SMC. Additionally, the stability of the SMC is proved using the Lyapunov stability theorem. Furthermore, the designed SMC is applied to the PSRM system for precise positioning. Simulation and experimental results demonstrate that the system tracks the reference trajectory smoothly, quickly, and accurately with strong interference suppression; the effectiveness of the designed SMC is verified.