| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent incorrect output of a yaw rate sensor by suppressing transmission of vibration of a motor equipped in a hydraulic control unit. Ž<P>SOLUTION: Driving of the motor 7 is intermittently controlled in the yaw rate sensor built-in type hydraulic control unit 1. Even if an oscillation frequency or a multiple frequency of the motor 7 becomes a detuning frequency, therefore, vibration caused by it is dispersed, to lower its peak value. Then vibration only within an allowance wherein a sensor value with respect to the yaw rate sensor 11 does not vary, is transmitted, and it is not shown as a sensor output. Incorrect output of the yaw rate sensor is prevented thereby. If the motor is not always intermittently controlled, but intermittent control is carried out only when a motor voltage is an intermittent switching voltage or more, the intermittent control is carried out only when a vibration level transmitted to the yaw rate sensor 11 becomes really large. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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