| 摘要 |
PURPOSE:To prevent generation of an erroneous pseudo-vehicle speed on a high road surface, by delaying a signal for generating the pseudo-vehicle speed by a predetermined time when the value of acceleration exceeds a predetermined value of wheel acceleration which is used for computation of comparison for controlling the hydraulic pressure of braking. CONSTITUTION:When a set acceleration value a2 is obtained, a timer 16 is started in association with the rise-up of the output of a comparator 7 to L-level upon returning of the value of acceleration or deceleration of a vehicle below the set acceleration value, and therefore, issues H-level output during a set time T2. This H-level output causes an analog switch 13 to be turned off by means of an inverter 17 while an analog switch 15 turned on. Accordingly, after obtaining the set acceleration value a2, when the comparator 12 detects a set deleration value b1 and delivers L-level output, a delay timer 14 is started to turn the output from H-level into L-level. the output is returned to H-level after elapse of a set time T1 from the time when the set deceleration value b1 is detected. The detection output of the set deceleration value b1 which has delayed by the set time T1 is transmitted to a pseudo-vehicle speed generating circuit 4 through the analog switch 5.
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