Patent ID: 7256565

Claim:
A wiper system, comprising: only one electronic control unit; two opposed wipers, wherein drive shafts of the wipers are situated near lateral boundaries of a windshield; and two wiper motors situated in a region of the drive shafts and configured to drive the wipers, wherein: a first one of the wiper motors functions as a master and forms a sub-assembly with the electronic control unit, the electronic control unit being excluded from the second one of the wiper motors, the sub-assembly includes a microcontroller and a control element for regulating a rotational speed and a rotational position of a drive shaft of the first one of the wiper motors, a second one of the wiper motors functions as a slave and is designed as a rotary motor and includes only a sensory system for detecting an absolute and a relative rotational position of a drive shaft of the second one of the wipermotors, the sensory system generates corresponding signals for the electronic control unit of the first one of the wiper motors, the electronic control unit regulates the rotational speed and the rotational position of the drive shaft of the first one of the motors as a function of a rotational position and a rotational speed of the drive shaft of the second one of the wiper motors, and the sensory system includes an anisotropic magnetoresistive (AMR) sensor.