To suppress disturbance of control due to fluctuation in a blade load and stabilize wiping movement of a wiper blade near an inversion position in a vehicle wiper device. An electric motor is subjected to PWM duty control based on a target speed (tgt spd) set according to a position of a wiper blade. After a deceleration start position of wiping operation, the electric motor is driven at a PWM duty value (sld sta duty × Ksd) obtained by multiplying a PWM duty value (sld sta duty) at the deceleration start position by a predetermined deceleration coefficient (Ksd) set according to the blade position. The deceleration coefficient (Ksd) is set according to the position of the wiper blade based on a ratio (tgt spd/pek tgt spd) between the target speed (pek tgt spd) of the wiper blade at the start of deceleration and the target speed (tgt spd) of the wiper blade.
WIPER CONTROL METHOD AND WIPER CONTROL DEVICE
WISCHERSTEUERUNGSVERFAHREN UND WISCHERSTEUERUNGSVORRICHTUNG
PROCÉDÉ DE COMMANDE D'ESSUIE-GLACE ET DISPOSITIF DE COMMANDE D'ESSUIE-GLACE
2020-05-06
Patent
Electronic Resource
English
IPC: | B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen |
WIPER DEVICE AND WIPER CONTROL DEVICE, AND WIPER CONTROL METHOD
European Patent Office | 2020
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