混合动力履带车辆机电复合制动力分配策略研究

Study on Electric-mechanical Combined Braking Distribution Strategy of Hybrid Electrical Vehicle

为解决双侧电驱动履带车辆复合制动问题,提出一种机械、电气制动力模糊分配控制策略,通过制定以踏板信号和车辆行驶速度为输入的模糊规则在线实时分配电气、机械制动比例,并考虑电制动实际存在的约束,提高车辆复合制动匹配效果。其次,建立了整车驱动电机系统、机械制动系统以及车辆动力学实时仿真模型,进行了多种制动强度下的驾驶员在环的控制原型仿真试验,仿真结果表明复合制动系统能够在有效回收制动能量的同时,实现平稳制动。

For the achievement of the braking stability of dual-motor hybrid tracked vehicle with elec-tric-mechanical combined braking system,the braking moment distribution method is proposed based on fuzzy principle. First,the fuzzy controller of braking moment distribution coefficient with accelerate pedal signal and drive velocity as input was designed. And the constraint of electric brake was taken into account for the improvement of matching performance. Then,the electrical drive system,mecha-nical brake system and vehicle dynamical real-time model were set up with the braking process simula-ted in different braking intensities. The simulation results indicate that the combined braking fuzzy con-trol system can recover some braking energy and realize stable braking.