基于云模型与DEMATEL法的数控机床可靠性分配方法
Reliability Allocation Method for CNC Machine Tools Based on Cloud Model and DEMATEL Method
郝凤莲 1卫良保2
作者信息
- 1. 晋中职业技术学院能源工程系,山西晋中 030600
- 2. 太原科技大学机械工程学院,山西太原 030024
- 折叠
摘要
针对传统数控机床可靠性分配方法存在的忽略专家决策过程的随机性和模糊性,以及子系统之间的相互影响等问题,提出一种结合云模型与决策试行与评价实验室(DEMATEL)法的数控机床可靠性分配方法.通过云模型定量表示专家的决策语言,减小了决策过程中随机性和模糊性的影响,同时采用TOPSIS方法得到子系统的可靠性分配系数.利用DEMATEL法分析子系统之间的相互影响关系,并对可靠性分配系数进行修正,得到子系统的综合可靠性分配系数,实现对数控机床可靠性的合理分配.最后,将该方法与传统方法进行对比,说明该方法的优势.
Abstract
Aiming at the problems of traditional reliability allocation method for CNC machine tool has problems such as ignoring the randomness and fuzziness of expert decision-making processes,as well as the mutual influence between subsystems,a reliability al-location method combining cloud model and decision-making trial and evaluation laboratory(DEMATEL)method for CNC machine tools was proposed.The cloud model was used to quantitatively represent the decision-making language of experts,the impact of random-ness and fuzziness in the decision-making process was reduced,and the TOPSIS method was used to obtain the reliability allocation co-efficients of subsystems.DEMATEL method was used to analyze the mutual influence between subsystems,and the reliability allocation coefficient was modified to obtain the comprehensive reliability allocation coefficient of the subsystems,and a reasonable allocation of re-liability for CNC machine tools was achieved.Finally,the advantages of the proposed method are demonstrated by comparing with tradi-tional methods.
关键词
数控机床/可靠性分配/云模型/决策试行与评价实验室Key words
CNC machine tool/reliability allocation/cloud model/decision-making trial and evaluation laboratory引用本文复制引用
出版年
2024
NETL
NSTL
万方数据