Abstract
The performance on braking of a vehicle is recently improved in the generation of brake-by-wire systems. In this paper, a new brake system is proposed by using the brake-by-wire technology. The velocity of a vehicle is controlled to track a nominal velocity which is calculated from an ideal tire-road friction model and a driver's input. However, the saturation of the tire-road friction makes tracking impossible when the slip becomes large. It is required that the control objection should be changed to prevent the wheel slip from being over a certain value. A hybrid brake system based on model reference adaptive control is designed to attain these control objectives under various road conditions. The stability of this system is theoretically proved, and then it is confirmed by simulations.
