| 摘要 |
PURPOSE:To improve the responsiveness of control, by dividing output of an accelerating sensor, detecting body deceleration, into plural levels by a comparator, and setting either larger value of body speed or wheel speed to be estimated and operated on the basis of output of this comparator down to the body side at each point of time. CONSTITUTION:Output of a wheel speed sensor 1 is converted into a digital waveform at a waveform processing part 2 and inputted into a digital processing part 6 for antiskid control use. And, output of an acceleration sensor 3 detecting the deceleration of a car body is removed of its noise component by a filter processing part 4 and then it is inputted into a comparator 5. At this comparator 5, the output of the acceleration sensor 3 is divided into plural levels, and on the basis of the output of this comparator 5, body speed is estimated and operated at the processing part 6, while either larger value of this estimated body speed or the wheel speed by the wheel speed sensor 1 is set down to the body speed at each point of time, thereby making it control a hydraulic modulator 7. With this constitution, hydraulic pressure to be transmitted to a wheel cylinder W/C is controlled.
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