Backward swing noise reduction of windshield wiper using an embedded system

A backward swing noise reduction of windshield wiper by using an embedded system is proposed. The embedded hardware mainly consists of SH microprocessor and motor driving IC. The embedded software implements PID algorithm. In the experiments, the target motor speed is dynamically changed and its schedule is devised to reduce the backward swing noise. The results indicate that the proposed embedded system and the speed schedule attains 10dB noise reduction. This corresponds to two third reduction of the noise for human feelings.