科技创新智能混合动力汽车电液复合制动的协调控制策略.pdf

学兔兔 汽 车 工 程 2011年(第33卷)第l1期 Automotive Engineering 2011(Vo1．33)No．11 2011187 智能混合动力汽车电液复合制动的协调控制策略水 付晓丹 ，罗禹贡 ，韩云武 ，江发潮 ，李克强 (I．清华大学，汽车安全与节能国家重点实验室，北京 100084；2．中国第一汽车股份有限公司技术中心电动车部，长春 130011； 3．中国农业大学工学院，北京 100083) [摘要] 为改善智能混合动力汽车智能辅助驾驶时的制动转矩响应，提出了电机与电子真空助力液压制动系 统协调控制策略，包括EVB预测启动控制策略和制动转矩协调控制策略。基于期望制动转矩预测，建立了融合 EVB动态响应特性的EVB预测启动控制策略。综合考虑电机动态响应特性、响应裕度、EVB动态响应特性和电池 荷电状态，提出了基于电机制动转矩动态补偿的制动转矩协调控制策略。仿真结果表明，该协调制动控制策略可在 整个制动过程提高制动转矩响应精度，改善系统的动态响应。 关键词：混合动力电动汽车；电子真空助力器；电机；控制策略 Coordinated Control Strategy for the Electro—hydraulic Braking System of Intelligent Hybrid Electric Vehicles Fu Xiaodan ，Luo Yugong ，Han Yunwu ，Jiang Fachao Li Keqiang 1．Tsinghua University，StateKey Laboratory ofAutomotive Safety＆Energy，Beijing looo84； 2．DepartmentofElectric Vehicles，China FAWRD Center，Changchun 130011； 3．College ofEngineering，ChinaAgricultural Unwersity，Beijing 100083 [Abstract] For improving the braking torque response of intelligent hybrid electric vehicles during assisted driving，an electric motor／electronic vacuum booster(EVB)coordinated control strategy for hydraulic braking sys— tern is proposed，which includes EVB predictive start control strategy and braking torque coordinated control strate- gy．EVB predictive start control strategy merged with EVB dynamic response characteristics is established based on prediction of desired braking torque．With concurrent considerations of the dynamic response characteristics and re- sponse margin of motor，the dynamic response characteristics of EVB and the SOC of battery，a braking