Wiper system i.e. windscreen wiper system of motor vehicle, controlling device, has control unit designed to adjust wiping frequency of wiper arm based on load size, which is dependent on torque that is applied by drive unit during wiping

摘要

The device has a drive unit (2) for driving a wiper arm (4). A control unit (6) is designed to adjust a wiping frequency of the wiper arm based on a load size, which is dependent on a torque that is applied by the drive unit during wiping. A drift unit (3) is provided for controlling the drive unit and for adjusting the wiping frequency according to an actuating variable. The control unit reduces the wiping frequency of the wiper arm to another wiping frequency, when the load size exceeds a load threshold.