Patent ID: 8198842

Claim:
A method for operating an actuating drive having an electrically commutated motor for adjusting an actuating member, having a position sensor for detecting the rotary angle position of the rotor of the motor or of a rotatable element which can be driven in a rotatable manner by said motor, having a motor control unit for commutating the motor and regulating the position of the actuating member, wherein position signals, which correspond to the position values detected by the position sensor, are supplied to the motor control unit, the method comprising: after the actuating drive is started, detecting uncompensated measured values by the position sensor over at least one full revolution of the rotor or of the element which can be driven in a rotatable manner, generating corresponding correction values for compensating angle errors in a compensation unit, and communicating the correction values to a memory unit for storage purposes, detecting errors in the position values during further operation of the actuating drive, calculating compensation signals values to compensate for the detected errors, based on the stored correction values, determining a zero position angular deviation between (a) a zero position of the rotor of the motor or of the rotatable element and (b) a zero position of the position sensor, the zero position of the rotor or of the rotatable element being a predetermined actuated electrically enforced position of the motor, and the zero position of the position sensor being determined by an installation position, and communicating the compensation signals and the zero position angular deviation to at least one of a commutation unit and a position regulation unit of the motor control unit.