公开(公告)号：US09923496B2

公开(公告)日：2018-03-20

申请号：US15533878

申请日：2015-08-20

Applicant: China University of Mining and Technology

Inventor： Hao Chen ,  Guoqiang Han ,  He Cheng ,  Qianlong Wang ,  Qing Wang ,  Xing Wang

IPC: H02P25/08 ,  H02P6/16

CPC classification number: H02P6/16 ,  H02P25/086

Abstract: A fault-tolerant control method for a position sensor of a switched reluctance motor, if the position sensor of the switched reluctance motor runs without a fault, detecting, in real time, four equal-interval or equal-angle continuous edge pulses of an output signal of the position sensor, the fourth edge pulse being the current edge pulse, and detecting time intervals (T1, T2, T3) between each two adjacent edge pulses sequentially, thereby calculating a time interval (T4) between the current edge pulse and a next edge pulse following the current edge pulse. If the position sensor of the switched reluctance motor fails, and the next edge pulse following the current edge pulse is lost, reconstructing the next edge pulse after the interval time (T4) of the current edge pulse of the output signal of the position sensor. The method can be used, when one or more position sensors of a rotatory and linear switched reluctance motor having various phases and various topology structures fail, to reconstruct an edge pulse after lost.