摘要
围绕能量回收效率和制动踏板感觉,对最大回馈效率制动力分配策略、最佳制动踏板感觉制动力分配策略以及兼顾回馈效率和制动踏板感觉的制动力分配策略展开研究。按电机回馈制动力与液压制动力协调方式的不同将制动过程分为电液协调准备阶段、电液协调控制阶段和回馈制动撤除阶段。分别选取电液协调准备阶段和电液协调控制阶段作为评价能量回收效率和制动踏板感觉的特征工况段,并定义制动踏板感觉波动度来度量制动踏板感觉的波动程度。实车试验结果表明最大回馈效率策略的制动能量回收效率最高,但制动踏板感觉较差;最佳踏板感觉策略的制动踏板感觉最好,但能量回收效率最低;回馈效率和踏板感觉兼顾策略的踏板感觉良好,且相比最佳踏板感觉策略而言,将制动能量回收效率提高了9.42%。
The maximum regenerative efficiency strategy, the best brake pedal feel strategy and the strategy taking into account both regenerative efficiency and brake pedal feet are studied for energy recovery efficiency and brake pedal feel. The electro-hydraulic coordination preparation stage is selected as the characteristic stage for evaluating energy recovery efficiency. The electro-hydraulic coordination stage is selected for evaluating brake pedal feel. Moreover Flupetd is defined to measure the fluctuation degree of the brake pedal. These three strategies are tested in an electric car. The results show that in the maximum regenerative efficiency strategy the car has the highest regenera- tive efficiency but the worst brake pedal feel, while in the best brake pedal feel strategy the lowest regenerative efficiency but the best brake pedal feel. The strategy taking into account both the regenerative efficiency and the brake pedal feel brings the car a good brake pedal feel. Furthermore it improves the regenerative efficiency by nearly 9.42% than the best brake pedal feel strategy.
出处
《电工电能新技术》
CSCD
北大核心
2013年第1期65-70,共6页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金(51075225)
国家高技术研究发展计划(863计划)(2011AA11A262)
国家高技术研究发展计划(863计划)(2011AA11A243)资助项目
关键词
回馈制动
能量回收效率
制动踏板感觉
协调控制
电动轿车
regenerative braking
energy recovery efficiency
brake pedal feel
coordinated control
electric cars
