Abstract
This paper deals with the speed control of automobile using microprocessor. The purposes of the speed control are to reduce the fatigue which the driver recievesfor long time driving, to save the gasoline consumption, and to keep on driving at the constant speed. For these purposes, two types of controller, that is, the finite settling controller and the state feedback controller based on optimal control are designed.
From results of computer simulations and road tests by the automobile (TOYOPET CROWN '78) equipped with microprocessor, we discuss which controller is better to control the speed of automobile from the standpoints of rise time, overshoot, fluctuations in manipulated variable, saving gasoline consumption, and comfortability of driving.
Finally, the long time road test was implemented by using the state feedback controller based on optimal control, and the comfortable and stable driving was realized.
