论文部分内容阅读
在模糊集理论的基础上 ,通过建立评估指标集 ,求取各性能指标的隶属度函数和权重 ,建立了内燃机整机性能的模糊综合评估模型 ,并藉此对内燃机主要性能指标的加权模糊综合评估方法进行了研究 ,提出了定量化和解析化评估的方法 .通过对多种内燃机的整机综合性能所进行的计算分析表明 ,内燃机整机性能模糊综合评估的关键是隶属度函数和权重的确定 ,而合理地确定各性能指标的主观赋权对评估结果有着十分重要的影响 .实例计算结果验证了所建评估模型是切实可行的 .
On the basis of fuzzy set theory, a fuzzy comprehensive evaluation model of engine performance is established by establishing evaluation index set and obtaining the membership function and weight of each performance index. Based on this, a weighted fuzzy comprehensive evaluation of main performance indicators of internal combustion engine The method of evaluation is put forward and the method of quantitative and analytical evaluation is put forward.The calculation and analysis of the comprehensive performance of various internal combustion engines shows that the key of fuzzy comprehensive evaluation of the performance of internal combustion engine is membership function and weight And it is reasonable to determine the subjective empowerment of each performance index has a very important impact on the evaluation results.Example calculation results verify the evaluation model is feasible.