| 摘要 |
PURPOSE:To prevent an unnecessary operation of a liquid pressure motor by fixing the calculated output of the wheel acceleration/deceleration to the deceleration lower than the preset deceleration for an anti-skid starting condition when the calculated wheel speed becomes lower than a fixed speed. CONSTITUTION:A wheel speed VW is calculated by an arithmetic unit (AU) 31 of a wheel speed information AU30 based on the output of a wheel speed sensor 1, and also the wheel acceleration/deceleration alphaW is calculated by an AU32. When the calculated wheel speed VW becomes lower than a fixed speed VO in a low-speed area expected to cause an unstable output of the wheel speed sensor 1, a timer unit 33 is activated, a transfer switch 35 is switched to a mode IIby its output, and the fixed deceleration alphaO stored in a deceleration memory 34 is outputted to an output signal deciding unit 6. This timer unit 33 is allowed to cut off the output at a fixed time TO after VW>VO is attained, and when the output is cut off, the switch 35 is held at a mode II, and the wheel acceleration/deceleration alphaW is outputted to the deciding unit 6.
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