| 摘要 |
<p>An anti-lock controller (2f) is used in an anti-lock control system for detecting a locked condition of a wheel (W1, W2, W3, and W4) of a vehicle (V) based on wheel rotation speed signal (Sw1, Sw2, Sw3, and Sw4) which are pulse signals. The anti-lock controller (2f) is provided with a malfunction detector (2h) constructed by a soft ware. This malfunction detector (2h) includes an interrupt detection function (#7 and #11) to produce an interrupt signal (Se1, Se2, Se3, and Se4) on receipt of the pulse signal (Sw1, Sw2, Sw3, and Sw4). At the same time, the controller (2f) suspends current operations and transfers control thereof to a routine for detecting the locked condition of the wheel (W1, W2, W3, and W4). A malfunction determination function (#7 and #11) is prepared for determining that the anti-lock controller (2f) malfunctions when the interrupt signal (Se1, Se2, Se3, and Se4) is absent with a detection of the pulse signal (Sw1, Sw2, Sw3, and Sw4). <IMAGE></p> |
