A METHOD OF DETERMINING AN ANGULAR OFFSET OF A POSITION SENSOR

The present invention provides a method of determining an offset between an angular position indicated by a rotary position sensor assembly secured directly or indirectly to the rotor of a multiphasepermanent magnet AC motor and an actual electrical position of the motor rotor. The method comprises the steps of: applying a voltage vector to the motor, which is aligned with a known angular position of the motor; waiting for the motor rotor to move to a location in which the vector when considered in the dq frame of reference is centered on the d-axis; measuring the angular position of the rotor indicated by the position sensor, and determining the offset from the difference between the measured angular position and the known actual position of the vector. 本申请提供一种确定由直接或间接地固定至多相永磁AC马达的转子的旋转位置传感器组件指示的角位置与马达转子的实际电学位置之间的偏移量的方法，该方法包括以下步骤：向马达施加电压矢量，该电压矢量与马达的已知角位置对准；等待马达转子移动到当在dq参考系中考虑时矢量以d轴为中心的位置；测量由位置传感器指示的转子的角位置，并且根据所测得的角位置与矢量的已知实际位置之差来确定偏移量。