Patent ID: 7821224

Claim:
A motor control system comprising: a control module configured to generate a voltage command in response to a torque request; a modulation module configured to receive the voltage command as an input and to generate control signals; an inverter coupled to a motor, said inverter configured to receive said control signals from said modulation module and to generate voltage signals to drive said motor; a feedback system for continuously modifying said voltage command generated by said control module, said feedback system comprising: a voltage estimator configured to receive the control signals from the modulation module and to generate estimated phase voltages of the motor based on the control signals; and a flux estimator configured to receive the estimated phase voltages from the voltage estimator and to generate an estimated flux value based on the estimated phase voltages, the flux estimator to provide the estimated flux value to the control module, wherein said control module generates said voltage command in response to said torque request and said estimated flux value.