| 摘要 |
PROBLEM TO BE SOLVED: To inhibit chatter vibration of a wiper blade during wiping by controlling rotation of a wiper motor.SOLUTION: Rotating angles of output shafts 36, 38 are sensed by rotation sensors 42, 44, respectively. A microcomputer 62 varies a component of a predetermined frequency range by using filters from a signal related to the rotating angles of the output shafts 36, 38 sensed by the respective rotation sensors 42, 44, and adds the signal processed by the filters to each of signals of command values of rotating speed of wiper motors 18, 20. Based on the signals of the command values obtained by the addition processing, drive circuits 46, 48 control voltage applied to each of the wiper motors 18, 20. |
