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基于熵值法的汽车动力性能主观评价指标权重确定方法

, PP. 153-158

Keywords: 汽车工程,动力性能,熵值法,权重系数,主观评价

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Abstract:

为了客观地确定汽车动力性能主观评价指标的权重系数,采用熵值法进行研究。介绍了熵值法的基本原理和求解过程,并结合层次分析法的基本思想构建主观评价体系,确定主观评价的试验道路以及试验工况。选取3位评车师,对5辆乘用车进行主观试验,结合十分制评分法对评价指标打分,得到各指标评分值,采用熵值法对指标赋权,加权得到5辆车的主观评价总得分。结果表明,熵值法完全以客观数据为依据,能够很好地确定各评价指标的权重系数,具有良好的客观性;对于同一辆乘用车而言,3位评车师的评价权重值存在差异,分析比较得知,权重差异性与熵值法的计算原理和方法有关,同时也与评车师的个人喜好存在一定关联。

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