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

作　　者：郝凤莲[1] 卫良保[2] HAO Fenglian;WEI Liangbao(Department of Energy Engineering,Jinzhong Vocational and Technical College,Jinzhong Shanxi 030600,China;School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan Shanxi 030024,China)

机构地区：[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

出　　处：《机床与液压》2024年第24期236-241,共6页Machine Tool & Hydraulics

基　　金：山西省教育科学规划“1331工程”(ZX-18159)。

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。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 allocation 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 randomness and fuzziness in the decision-making process was reduced,and the TOPSIS method was used to obtain the reliability allocation coefficients 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 reliability for CNC machine tools was achieved.Finally,the advantages of the proposed method are demonstrated by comparing with traditional 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 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]