Application of a self-tuning two degree of freedom PID controller based on fuzzy inference for PMSM

A self-tuning two degree of freedom (2-DOF )PID controller based on fuzzy inference is presented. In view of the deficiency of conventional 2-DOF PID controller in the parameter time varying system, integrate the two-degree-of-freedom PID control with fuzzy techniques, a self-tuning PID controller based on fuzzy inference is designed. On-line automatically tuned parameters are realized at different states. Many simulation experiments have done are proven the parameter self-regulative two-degree-of-freedom PID controller based on fuzzy inference can satisfy high target control requirement of the uncertain complex operating mode compared with the conventional 2-DOF PID controller.