Anti-windup based torque controller for brushless DC motors

This paper presents an anti-windup based torque controller for brushless DC motor. For the trapezoidal case of back-EMF, a pseudo-vector control scheme is applied to generate ideal current references. Then, an optimal torque tracker is presented to provide good tracking performances of current response to produce the torque response for immediate variation of torque commands. For practical consideration, the tracker with an anti-windup control scheme can provide the reasonable control input within the required constraint without losing the good tracking performance as possible.