公开(公告)号：US09559621B2

公开(公告)日：2017-01-31

申请号：US14736439

申请日：2015-06-11

Applicant: Control Techniques Limited

Inventor： Jürgen Fischer

IPC: H02P23/12 ,  H02P6/16 ,  G01R23/00

CPC classification number: H02P6/16 ,  G01D5/2448 ,  G01R23/00

Abstract: The present disclosure relates to a method of determining an offset between a detector and a point on a motor, the movement of the point on the motor being impeded in at least one direction. In particular, this disclosure relates to a method of determining a commutation offset for an encoder that works in conjunction with a synchronous motor. The commutation offset is an offset between the detector and the north pole of a permanent magnet within the motor. The method comprises setting a test value for the offset, causing a displacement of the detector based on the test value and measuring that displacement. The method further comprises repeatedly increasing the test value, and causing and measuring a displacement for each so increased test value until it is determined that the test value has crossed a threshold.

Abstract translation: 本公开涉及一种确定检测器和电动机上的点之间的偏移的方法，电动机上的点的移动在至少一个方向上被阻碍。 特别地，本公开涉及一种确定与同步电动机一起工作的编码器的换向偏移的方法。 换向偏移是电机内的永磁体的检测器和北极之间的偏移。 该方法包括设置偏移的测试值，基于测试值引起检测器的位移并测量位移。 该方法还包括重复地增加测试值，并且对于每个这样增加的测试值引起和测量位移，直到确定测试值已经超过阈值。