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汽车纵向集成控制系统的路面识别方法

, PP. 177-182

Keywords: 汽车工程,纵向集成控制系统,实车试验,路面识别,附着系数,Burckhardt轮胎模型

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Abstract:

?为研究汽车纵向动力学控制中的路面识别问题,提出了一种适应全工况的分级路面附着估计方法。在正常行驶工况下,通过对轮胎纵滑刚度Cs的估算与校验,实现高附着路面与低附着路面的辨别;在ABS制动工况和ASR驱动工况下,通过比较路面附着系数估算值与其在不同路面下模型参考值之间的匹配程度,并且基于可信度阈值校验综合确定最终的路面类型;在此基础上,通过实车试验对纵向路面识别方法进行评价与验证。结果表明:所提出的路面识别方法对于不同直行工况、不同附着条件的路面均具有较好的实时性和有效性。

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