DEVICE AND METHOD FOR MONITORING THE TORQUE OF A BRUSHLESS AC MOTOR

摘要

A torque monitoring device is provided for a brushless AC motor. The device comprises an observer having inputs for voltages (Va, Vb, Vc) across windings of the brushless AC motor, having an input for an angular velocity (ωs) of a rotor of the brushless AC motor, and an input for a pole wheel angle (θs) of the brushless AC motor.