模糊综合评判法在机械设计方案评判中的应用

发布时间：2018-04-21 10:52

本文选题：模糊综合评判法 + 机械设计　；参考：《大连交通大学》2011年硕士论文

【摘要】：模糊综合评判法是一种评判方案优劣与否的方法。一般情况下,评判一个方案需要考虑多方面的因素,并且必须对每一个因素进行详细分析。机械设计的方案评价一般考虑因素比较多且比较复杂,而且很多评价因素具有强烈的模糊性。为了得到最佳的设计方案或者对设计方案的优劣进行排序就需要建立一个评价系统,从前的评价系统都是通过主观印象建立起来的,这样评价系统一般具有很强的主观性。为了客观且量化的评价机械设计方案的优劣,这就需要找出一个合适的评价系统。本论文利用模糊综合评判法建立机械设计方案模糊综合评判模型,从而在多个设计方案中筛选出最佳设计方案或者对多个设计方案的优劣进行排序。首先,比较详细的介绍了模糊综合评判法的基本原理和基本算法以及相关知识。其次,利用模糊综合评判法的基本原理和机械设计的内容建立了带传动设计方案评判的模糊综合评判模型。最后,给出了一种适用于机械设计方案评判确定权重的方法—熵权法,并将熵权法应用于机械设计方案的模糊综合评判模型中,经过计算,得到与经典算法同样的结果。本文又将熵权法模糊综合评判模型进行改造,并将新得到的模型应用于机械设计方案评价,得到与实践吻合的结果。
[Abstract]:The fuzzy comprehensive evaluation method is a method to judge the merits and demerits of the scheme. In general, many factors must be considered to judge a scheme, and each factor must be analyzed in detail. The scheme evaluation of mechanical design is generally considered by many factors, and many evaluation factors have strong fuzziness. In order to get the best design scheme or to sort the design scheme, we need to establish an evaluation system. The former evaluation system is established by subjective impression, so the evaluation system is generally very subjective. In order to evaluate the advantages and disadvantages of mechanical design scheme objectively and quantitatively, it is necessary to find a suitable evaluation system. In this paper, the fuzzy comprehensive evaluation model of mechanical design scheme is established by using fuzzy comprehensive evaluation method, so that the best design scheme can be selected out of multiple design schemes or the merits and demerits of multiple design schemes can be sorted. Firstly, the basic principle, basic algorithm and related knowledge of fuzzy comprehensive evaluation method are introduced in detail. Secondly, the fuzzy comprehensive evaluation model of belt transmission design scheme is established by using the basic principle of fuzzy comprehensive evaluation method and the content of mechanical design. Finally, an entropy weight method, which is suitable for determining the weight of mechanical design scheme, is presented, and the entropy weight method is applied to the fuzzy comprehensive evaluation model of mechanical design scheme. The same result as the classical algorithm is obtained by calculation. In this paper, the fuzzy comprehensive evaluation model of entropy weight method is modified, and the new model is applied to the evaluation of mechanical design scheme. The results are in good agreement with practice.
【学位授予单位】：大连交通大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH122

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