Anti-windup method for fuzzy PD+I, PI and PID controllers applied in brushless DC motor speed control

This paper proposes a new anti-windup method for integrative portion of many controllers: PI, PID and fuzzy PD+I. The proposed method does not require any coefficient for the anti-windup method, as other known anti-windup methods does. All the deduction and development of the proposed anti-windup method for PI, PID and fuzzy PD+I are presented here, resulting in two general and simple anti-windup equivalent methods. Following, the application of the proposed anti-windup method in a brushless DC motor speed control, employing a fuzzy PD+I controller, is shown and compared to a traditional anti-windup method, which achieves better results than that traditional method.