| 摘要 |
<p>An antilock control device having a malfunction detecting unit for detecting the failure of wheel speed sensors for the wheels of a car. The signals from the wheel speed sensors are fed into the detecting unit. If the detected wheels speeds of the wheels other than the one estimated to be rotating at the lowest speed is larger than a first predetermined value, if the difference of speed among the other wheels is within a predetermined range, and if the wheel speed of the one wheel rotating at the lowest speed is kept smaller than a second predetermined value smaller than the first one for a predetermined period of time, the detecting unit judges that the sensor for the one wheel is malfunctioning. In another arrangement, the detecting unit judges that the sensors for some of the wheels other than the one estimated to be rotating at the highest speed of all the wheels are malfunctioning, if the detected wheel speed of the one wheel is larger than a third predetermined value, and if the detected wheel speeds of the abovementioned some of the other wheels are kept smaller than a fourth predetermined value smaller than the third one for a predetermined period of time.</p> |
