基于发动机制动的履带车辆再生制动控制策略研究

Study on Control Strategy of Regenerative Braking for Tracked Vehicle based on Engine Braking

以某型履带车辆为研究对象,进行发动机制动力的分析和计算,结合静动液辅助制动系统的再生制动力,提出了基于驱动轮轴最大可承受减速度(不发生抱死)的制动力分配控制策略。无再生制动力时,通过联合制动充分利用发动机制动;有再生制动力时,首先采用液压泵进行再生制动,其次为摩擦制动和发动机联合制动,联合制动优先采用发动机制动,其次为摩擦制动。进行基于该控制策略的履带车辆再生制动建模和典型工况的仿真分析,结果表明,所提出的再生制动控制策略可以保证车辆的安全制动并能实现有效的能量回收,是正确可行的。

conducted. An Focusing on a tracked vehicle auxiliary braking system, analysis and calculation of engine braking is optimal control strategy of auxiliary braking is put forward based on drive shaft maximum affordable de- celeration. When there is no regenerative braking , engine brake force can be used effectively to reduce the braking force requirements for frictional brakes based on the there is regenerative braking, the braking priority sequence is generator b braking. analysis A forward simulation model for regenerative braking under typical driving cycles is conducted. The results calculated results by gearbox shift strategy of engine braking. When raking, engine braking, and finally frictional system of tracked vehicle is show that the control strategy built. The simulation and and the models are reason-able and feasible.