In order to improve the braking performance of electric vehicles, a novel brake-by-wire\nactuator based on an electro-magnetic linear motor was designed and manufactured. For the\npurpose of braking force regulation accuracy and high robust performance, the state observer and\nthe anti-disturbance controller were designed in this paper after describing the actuator structure,\nbraking principle, and mathematical model. The simulation and experimental results showed that\nthe brake actuator responded rapidly, since its response time was only 15 ms. Compared to\ntraditional PID (Proportion Integration Differentiation) methods, the controller proposed in this\npaper is able to regulate the braking force more precisely and has better anti-disturbance\nperformance, thus the braking process can be accurately controlled according to the driverâ??s\ndemand. The vehicle simulation results showed that the braking distance and braking time were\nshortened by 12.19% and 15.54%, respectively compared with those of the conventional anti-lock\nbrake system (ABS) in the same braking conditions.
Loading....