| 摘要 |
PURPOSE:To enable far safe four wheel antiskid control, by a method wherein, at the time of abnormality of a wheel speed sensor of one side of a right and left front wheels during the antiskid control, the antiskid control is made to continue by brake systems of the remaining three wheels. CONSTITUTION:The title device is provided with each of control parts 20a-20c controlling each of brake systems of a right front wheel, a left front wheel and rear wheels and each of actuators A-C are made to control by applying output signals of respective wheel speed sensors 1a-1c to each of the autuators. The control part 20a (20b is similar too) is so constituted that instructions to return the title device to a conventional braking state is applied to an output part 22a of a control signal through a fail-safe control part 24a when abnormality of the sensor 1a is detected by an abnormality detecting part 23a from an output state of a pulse signal to be formed by making wave-form shaping 21a of an output of the sensor 1a. In this instance, the title device is so constituted that an output part 25a of an abnormal signal is operated through an OR gate Ga and an abnormal signal is applied to a fail-safe control part 24b of the control part 20b through a contact point of a changer-over switch 26a. |
