METHOD FOR COMPENSATING A PHASE OFFSET BETWEEN A ROTOR POSITION SENSOR AND THE ROTOR POSITION OF AN ELECTRICALLY COMMUTATED MOTOR

摘要

The invention relates to a method for compensating a phase offset between a rotor position sensor and the rotor position of an electrically commutated motor, in which the rotor position sensor measures a position of the rotor of the electrically commutated motor, which position is compared to an expected position, wherein a phase offset is formed from the difference between the measured and the expected position. The phase offset is used to control the electrically commutated motor. In order to be able to correct a phase offset without great technical effort and in minimal time, the position of the rotor is measured by means of an absolute value rotor position sensor and is correlated to a motor parameter that characterizes the expected position of the rotor.