| 摘要 |
PURPOSE:To keep off any wrong operation in a solenoid valve in time of wheel locking, by actuating the solenoid valve on the basis of a wheel rotation stop signal and a reversal signal for detecting the wheel lock in time of a running car being braked. CONSTITUTION:A wheel speed signal generator 1 feeds a comparator circuit 6 and a pseudo-speed signal generator 7 with a wheel rotation signal f1 via a wheel stop discrimination circuit 2 and an F-V converter 5. The circuit 2 outputs a wheel rotation stop detecting signal S1 to a gate circuit 3. On the other hand, the signal generator 7 outputs a pseudo-wheel speed VT, which decreases in a state of deceleration determined according to each car speed, to the comparator circuit 6 which, in turn, detects a wheel lock through each signal of the converter 5 and the signal generator 7 and outputs its signal S2 to a timer 8. When the signal S2 continues to keep for a certain period of time, the timer 8 feeds a reverser 9 with the signal S2, while the reverser 9 outputs a reversal signal S2' to the gate circuit 3 which operates a solenoid valve 4 on the basis of each of signals S1 and S2' as well as a signal S3 of an accelerator non-step detecting switch 10. |
