Fuzzy Fractional Order PID Control of Permanent Magnet Synchronous Motor Using Sliding Mode Disturbance Observer

The objective of this study is to enhance the sensitivity of the speed control system of a permanent magnet synchronous motor (PMSM) to uncertainties such as parameter variations and external disturbances. To this end, a fuzzy fractional order PID control strategy for PMSM with a sliding mode disturbance observer is proposed. This control strategy uses a fractional order PID (FOPID) controller instead of the PI controller typically used in the speed outer loop. It broadens the parameter tuning range of the controller, incorporates fuzzy rules into the FOPID controller, facilitates parameter self-tuning, and enhances the control effect through the real-time observation of external disturbances by the disturbance observer, which compensates for external disturbances in the controller. The superiority and feasibility of this strategy are finally verified by means of an experimental platform.