Method of regulating the torque response of a multiphase electronically commutated electric motor

A method for regulating the torque response of a multiphase electronically commutated electric motor comprising:

• generating a torque-regulating variable;
• providing a rotor-position signal;
• storing, in a memory, nominal current values corresponding to each potential value for the torque-regulating variable and each potential rotor-position value as a digital nominal current value for each phase to be regulated, said digital nominal current values being selected to compensate for the differences between the actual torque and the ideal torque at each rotor position resulting from the manufacture of said electric motor;
• triggering a particular digital nominal current value for each phase to be regulated by applying the current torque-regulating variable and the current rotor position signal to the address inputs of the memory;
• converting each particular digital nominal current value to an analog nominal value;
• forming a current-regulating variable from the difference between said analog nominal current value and actual current value for each phase to be regulated;
• and
• generating a nominal voltage corresponding to said current-regulating variable for each current phase and using said nominal voltages to control the electric motor using a pulse width modulator.