Automobile speed control system

摘要

An automobile speed control system has a comparator circuit for issuing a speed difference signal when there is a difference between an automobile speed signal indicative of an automobile speed and an automobile speed setting signal indicative of a desired speed setting, an actuator responsive to the speed difference signal for adjusting the opening of a throttle valve to change the speed of an automobile in order to eliminate the speed difference signal, a cancel switch for cancelling a constant-speed travel mode of the automobile, a resume switch for resuming the constant-speed travel mode which has been cancelled, a timer circuit energizable for a prescribed interval of time in response to operation of the resume switch while the automobile is running in the constant-speed travel mode, and an acceleration signal generator circuit for generating an acceleration signal in response to operation of the resume switch while the timer circuit is in operation, whereby the acceleration signal can be produced to increase the speed of the automobile when the resume switch is actuated.