混合动力汽车下坡辅助控制方法.pdf

学兔兔
汽车工程
2012年(第34卷)第7期 Engineering Automotive 2012()
2012114
混合动力汽车下坡辅助控制方法
韩云武,罗禹贡,李克强
(清华大学,汽车安全与节能国家重点实验室,北京 100084)
[摘要] 为提高混合动力汽车(HEV)下坡过程中的安全性和燃油经济性,基于 HEV电机制动力矩可精确调
节、制动能量可回收的特点,提出了一种下坡主动安全控制方法。结合对驾驶员坡道驾驶意图的识别,建立分层控
制系统架构;根据目标车速计算制动力矩,制定制动力矩在各制动子系统间的分配和动态协调策略,并进行仿真验
证。结果表明,该方法在提高下坡路段 HEV行驶安全性和燃油经济性的同时,减轻了驾驶员的操纵负担,改善了乘
员的乘坐舒适性。
关键词:混合动力汽车;下坡辅助控制;动态协调
DownhillAssist ControlMethod Hybridfor Electric Vehicle
Han Yugong& Li Keqiang
Tsinghua University。StateKey Laboratory ofAutomotive Safeq&Energy,Beijing ofAutomotive Laboratory University。StateKey Tsinghua 100084
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