System and a method for controlling the operation of a vehicle wiper device

摘要

A system and a method for controlling the operation of a vehicle window wiper device as a function of the quantity of liquid present on the window are described. The wiper device comprises an electric drive motor connected to at least one wiper blade arm provided with a wiper blade.The control system comprises:a first sensor adapted to provide a first output signal corresponding to a first quantity dependent on the instantaneous friction between the wiper blade and the vehicle window;a second sensor adapted to provide a second output signal corresponding to a second quantity correlated to the aerodynamic load acting on the wiper blade; anda processing and control unit coupled to both sensors to receive at its input the first and the second signal).The processing and control unit is arranged to determine a value of a third quantity correlated to the quantity of liquid present on the window on the basis of the received signals and by comparison with a predetermined reference model, and to provide output command signals for controlling the activation of the electric motor in a predetermined manner as a function of the determined value of this third quantity.