Reliability evaluation on CNC lathes based on the modified L-M method  

作　　者：于捷 石耀霖 申桂香 贾亚洲 

机构地区：[1]Laboratory of Computational Geodynamics,Graduate University of Chinese Academy of Sciences [2]Mechanical Engineering College,Changchun University [3]Mechanical Engineering College,Jilin University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2009年第5期665-668,共4页哈尔滨工业大学学报（英文版）

基　　金：Sponsored by the National Natural Science Foundation of China(Grant No.40774048)

摘　　要：Equivalent ways commonly used in engineering works are not effective to estimate the reliability of tandem system based on L-M method. One modified L-M method is an important means to estimate the reliability of CNC lathes. A method of using two named confidence limits for the estimation is put forward. Fitting resuits of the sub-systems of CNC machine tools are estimated. And the scattered level of confidence limits facing the reliability matrix of sub-systems can be clearly seen.Equivalent ways commonly used in engineering works are not effective to estimate the reliability of tandem system based on L-M method.One modified L-M method is an important means to estimate the reliability of CNC lathes.A method of using two named confidence limits for the estimation is put forward.Fitting results of the sub-systems of CNC machine tools are estimated.And the scattered level of confidence limits facing the reliability matrix of sub-systems can be clearly seen.

关 键 词：L-M method CNC lathes reliability evaluation confidence limits scattered level 

分 类 号：O221.1[理学—运筹学与控制论] TM732[理学—数学]