汽车主动转向-制动协同控制策略研究

Synergetic Control Strategy Study of Automobile Active Steering-Braking Systems

针对汽车主动转向-制动联合工况,以提高汽车稳定性为目标研究了汽车主动前轮转向和防抱死制动系统的协同控制策略,设计了模糊控制转向控制器与比例-积分-微分(PID)制动控制器的协调策略,建立了二自由度转向模型和制动模型。结合Simulink和Adams/Car中的车辆模型对控制策略进行了测试和仿真分析。结果表明,在主动转向-制动联合工况下,该协同控制策略能够有效降低车辆制动距离,提高汽车行驶稳定性。

Aiming to improve the automobile stability under the joint working condition of active steering and braking,a synergetic control strategy between the active front-wheel steering and antilock braking system is studied.A fussy control steering controller and proportion integration differentiation(PID)braking controller are designed and a two degree of freedom steering model and braking dynamic model are established.The control strategy is tested and simulated by using the joint simulation model based on Simulink and Adams/Car.The results show that this synergetic control strategy can effectively reduce the braking distance and improve its stability for automobile under steering and braking conditions.