论文部分内容阅读
为了使纯电动汽车在制动过程中既可以满足安全需求又能尽量多地回收制动能量,在分析了机电复合制动系统的基本原理之后,充分考虑其工作特性的限制,提出基于制动器优先选择的机电复合制动控制策略,并设计了制动力分配模糊控制器。搭建了纯电动汽车机电复合制动的仿真模型进行安全性验证,并将此模型嵌入到ADVISOR2002中测试制动能量回收效率。结果表明,设计的控制策略达到了预先设计的安全要求,在CYC_UDDS工况下,制动能量回收效率达到了44.25%,较ADVISOR自带的控制策略提高了70%。这对纯电动汽车延长续驶里程,提高整车的能量利用率具有较大的意义。
In order to make the pure electric vehicle not only meet the safety requirements but also recover the braking energy as much as possible during the braking process, after analyzing the basic principle of the electromechanical composite braking system and fully considering the limitation of its operating characteristics, the brake- The selection of electromechanical brake control strategy, and the design of the brake force distribution fuzzy controller. The simulation model of pure electric vehicle electro-mechanical composite brake is built for safety verification. The model is embedded in ADVISOR2002 to test the braking energy recovery efficiency. The results show that the designed control strategy meets the pre-designed safety requirements. Under CYC_UDDS conditions, the braking energy recovery efficiency reaches 44.25%, which is 70% higher than ADVISOR’s own control strategy. This is pure electric vehicles to extend driving range, improve energy efficiency of the vehicle has great significance.