公开(公告)号：US11661034B2

公开(公告)日：2023-05-30

申请号：US16298749

申请日：2019-03-11

申请人： DENSO CORPORATION

发明人： Kota Mizuno

IPC分类号： H02P3/08 ,  H02P1/40 ,  H02P6/16 ,  B60S1/08 ,  H02P23/18 ,  H02P23/04

CPC分类号： B60S1/08 ,  H02P23/04 ,  H02P23/183 ,  B60S1/0803

摘要： A wiper motor control circuit controls a drive circuit such that an actual speed of a wiper speed computed based on change in a rotation angle of an output shaft of the wiper motor detected by a rotation angle sensor that detects the rotation angle becomes a target speed corresponding to a position of a wiper blade indicated by the rotation angle detected by the rotation angle sensor. The wiper motor control circuit also controls the drive circuit so as to apply a braking current in the wiper motor when the actual speed has exceeded a threshold value when the rotation angle detected by the rotation angle sensor indicates a return position of the wiper blade.