SPEED CONTROL OF PERMANENT MAGNET SYNCHRONOUS MOTOR USING DIFFERENT STRATEGY OF SLIDING MODE APPROACH

Abstract

In order to optimize the speed-control performance of the PMSM system with different disturbances and uncertainties, hybrid nonlinear speed-controls for the PMSM, based sliding-mode control, is developed. A sliding-mode controller (SMC) is designed, based on conventional reaching law but the amount of chattering and reaching time are high. To raise this problem, two different control strategies will be studied; the first that combines sliding mode control with fuzzy logic (FSMC) and the second one combines the sliding mode control with robust integral backstepping (I-Back-SMC) strategy. A comparative study of these three types of controls was given to improve the performance significantly. Simulation results illustrate the validity and the effectiveness of the suggested methods.

Keywords

• Fuzzy logic control
• Sliding ode control
• Integral backstepping
• Permanent magnet synchronous motor