{
  "$type": "site.standard.document",
  "description": "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…",
  "path": "/patents/960612",
  "publishedAt": "2015-05-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60S1/08",
    "MITSUBA CORP [JP]"
  ],
  "textContent": "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.",
  "title": "WIPER CONTROL METHOD AND WIPER CONTROL DEVICE"
}