Movement control device for vehicle

Abstract

Abstract PURPOSE:To make it possible to surely detect abnormality of a sensor in a vehicle which is moved under control in association with a wheel speed signal, by determining the abnormality when the detecting value of acceleration or deceleration which is obtained by differentiating the wheel speed, exceeds a predetermined value. CONSTITUTION:An anti-skid control circuit 16 turns on/off a transistor Tr3 for operating and controlling a solenoid 18 in a hydraulic actuator in association with a wheel speed signal Vw delivered from a wheel speed detecting circuit 12 which receives the output of a wheel speed sensor 10. Further, the signal Vw is applied to an acceleration or deceleration detecting circuit 20 which delivers an output signal that is compared with a predetermined value by a comparator 22. In this step, if the sensor 10 is accidentally disconnected, the signal Vw abruptly drops to zero value, and therefore, the detected value of acceleration or deceleration alphaw by the circuit 20 offers a peak variation which exceeds the predetermined value -delta (for example -20G) of the comparator 22. As the result, the comparator 22 delivers H level output so that RS-FF24 is set and a warning indicator 26 is lit due to a Tr5 being turned on.

Inventors

• 👤 Toshiro Matsuda
• 👤 松田　俊郎

Bibliographic Details