Speed control apparatus with compensation for actuator link play

摘要

An automatic speed control apparatus for vehicles for controlling speed with good responsiveness and without delay at the start. An actuator opens and closes a throttle valve independently of an accel pedal, and a link connects the throttle valve and the actuator. A speed sensor detects the vehicle speed and a speed control mechanism controls the actuator so that the vehicle speed from the speed sensor is maintained at a predetermined speed. The amount of idle working of the actuator caused by the play of the link when the throttle valve is opened by the actuator is detected and the detected amount of idle working is added to the amount of control of the speed control mechanism as an amount of offset working in the direction in which the throttle valve is opened.