考虑参数权重的数控机床电主轴加速试验优化设计  

Optimal design of acceleration test of motorized spindle of numerical control Machine Tool considering parameter weight

作　　者：赵泓荀 杨兆军[1,2] 陈传海 田海龙[1,2] 王立平 ZHAO Hong-xun;YANG Zhao-jun;CHEN Chuan-hai;TIAN Hai-long;WANG Li-ping(Key Laboratory of Numerical Control Equipment Reliability,Ministry of Education,Jilin University,Changchun 130022,China;College of Mechanical and Aerospace Engineering,Jilin University,Changchun 130022,China;Chongqing Research Institute,Jilin University,Chongqing 400037,China;Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]吉林大学数控设备可靠性教育部重点实验室,长春130022 [2]吉林大学机械与航空航天工程学院,长春130022 [3]吉林大学重庆研究院,重庆400037 [4]清华大学机械工程系,北京100084

出　　处：《吉林大学学报（工学版）》2022年第2期409-416,共8页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51975249);重庆市自然科学基金项目(cstc2021jcyj-msxmX0935).

摘　　要：为解决电主轴步进多应力加速退化试验针对模型参数优化设计时部分模型参数估计精度低的问题,提出了一种新的步进多应力加速退化试验方案优化设计方法。利用敏感性分析方法、应力综合重要度确定加速退化试验中加速模型的各参数权重,基于Ds准则与各参数权重提出了一种新的优化设计准则,结合遗传算法给出了优化流程。最后,以国产电主轴为例,对其加速退化试验方案进行了优化设计,将结果与现有准则进行对比,验证方法的有效性。In order to solve the problem of low estimation accuracy of some model parameters in the multi stress step stress accelerated degradation test of motorized spindle,a new optimal design method of multi stress step stress accelerated degradation test scheme is proposed in this paper.The sensitivity analysis method and the comprehensive importance of stress are used to determine the weight of each parameter of the acceleration model in the accelerated degradation test,A new optimal design criterion is proposed based on Ds-optimality and parameter weight;the optimization process is given combined with genetic algorithm.Finally,taking the motorized spindle made in China as an example,the accelerated degradation test scheme is optimized,and the results are compared with the existing criteria,verify the effectiveness of the method.

关 键 词：数控机床 电主轴 可靠性 加速退化试验 优化设计 

分 类 号：TH17[机械工程—机械制造及自动化]