摘要
针对数控机床精度评价时主观权重人为因素强、客观权重过于依赖样本的问题,提出一种基于组合赋权的模糊评价法。该方法将基于序关系分析法的主观权重和熵值法的客观权重进行组合,并结合层次分析法构建目标权重矢量,然后通过建立机床各评价指标的判断矩阵,利用模糊综合评价法获得机床精度综合评价结果。文章以数控龙门铣床为例验证了该方法的合理性和可行性。该方法可为数控机床的选用提供依据,也可为机床性能的改进和提高提供参考。
Aiming at the problem that the subjective weight is too subjective while the objective weight is too dependent on the sample in the accuracy evaluation of CNC machine tools,a fuzzy evaluation method based on combined weighting is proposed to evaluate the accuracy of CNC machine tools.This method combines the subjective weight based on the order relation analysis method and the objective weight of the entropy value method,and uses the analytic hierarchy process to establish the target weight vector.By establishing the judgment matrix of each evaluation index of machine tool,the comprehensive evaluation result of machine tool accuracy is obtained by fuzzy comprehensive evaluation method.Taking CNC gantry milling machine as an example,the results can provide basis for the selection of CNC machine tools,and can also provide reference for the improvement of machine performance.
作者
封志明
闵兴龙
江维
赵帅
FENG Zhiming;MIN Xinglong;JIANG Wei;ZHAO Shuai(School of Mechanical Engineering,Xihua University,Chengdu 610039 China)
出处
《西华大学学报（自然科学版）》
CAS
2022年第5期64-72,共9页
Journal of Xihua University:Natural Science Edition
基金
四川省科技计划资助项目(2019YFG0338)
四川省教育厅资助项目(16ZA0156)
西华大学重点资助项目(Z1520219)
西华大学研究生创新基金(SA2000002916)。
关键词
数控机床
精度评价
模糊评价
组合赋权
序关系分析法
熵值法
CNC machine tools
accuracy evaluation
fuzzy evaluation
combination weighting
order relationship analysis method
entropy value method
