基于模糊层次分析法的越野车动力传动系统方案评价

Scheme evaluation for powertrain of off-road vehicle based on fuzzy analytic hierarchy process

动力传动系统方案的评价需采用多目标评价模型,传统的模糊评价方法在确定模糊判断矩阵时都需评价者在评语集标尺上打模糊分,为避免主观依赖性,将层次分析法与模糊综合评价方法结合,直接通过对各方案评价指标的一致无量纲化处理构造模糊判断矩阵。采用1～9标度层次分析法对各指标关于上层准则的重要性进行两两比较,结合专家咨询表计算各指标权重,确定各方案的模糊层次法总评价值,进而对越野车动力传动系统备选方案进行优选。

Multi objective evaluation model was adopted to evaluate the scheme of powertrain.Usually the traditional fuzzy evaluation method might require the valuator to score fuzzily in the evaluation set scale to determine fuzzy judgment matrix.To avoid subjective dependence a fuzzy judgment matrix was built through agreed dimensionless processing for evaluating index of schemes combining analytic hierarchy process with fuzzy synthetic evaluation.At the same time the importance of each two indicators was compared using 1~9 scale AHP.And the weight of each index was calculated combined with expert consultation table to determine total evaluation value of fuzzy AHP for schemes.Thus the optimal scheme for the powertrain was selected.