期刊论文

Liu, Zhiqiang(lzq0228@126.com)

中文

中南大学学报(自然科学版)

1672-7207

2016

47

11

3700-3706

10.11817/j.issn.1672-7207.2016.11.012

(11572055):国家自然科学基金资助项目 (2013319825090):交通运输部基础应用研究项目 :长沙市科技局项目(K1301006-11)(Project(11572055) supported by the National Natural Science Foundation of China (2013319825090):Project :Project(K1301006-11) supported by the Science and Technology Bureau of Changsha)

本校为第一且通讯机构

分析影响电动汽车制动能量回馈的主要因素;以制动能量最大化为目标,建立电液复合制动力分配模型,设计以电液复合制动特性参数蓄电池荷电状态(S_(OC))、制动强度、车速为输入,回馈制动比例为输出的制动力模糊分配规则。同时,以能量回收率为评价指标对S_(OC)、制动强度及车速进行灵敏度分析。研究结果明:S_(OC)对能量回收率的影响最大,制动强度对能量回收率的影响次之;根据各特性参数对评价指标的影响权重,可改进电液复合制动力分配模糊规则;在相同制动工况下,考虑参数灵敏度的电动汽车电液复合回馈制动模糊控制方法可有效提高制动能量回收率。

The influence factors on braking energy feedback in electric vehicles were analyzed. To recycle more energy, a braking force distribution model was established, and a fuzzy controller on braking force distribution was designed, in which the inputs parameters were vehicle speed, braking strength and battery SOC, and output parameter was regenerative braking ratio. The sensitivity analysis of SOC, braking strength and vehicle speed was conducted by adopting a perturbation method, in which energy recovery rate was taken as the evaluation index. Th...