基于故障链的复杂系统故障相关系数建模  

Dependent coefficient model for complex system based on failure chains

作　　者：王晓燕[1,2] 申桂香[1] 张英芝[1] 孙曙光[1] 戚晓艳[1,3] 荣峰[1] 

机构地区：[1]吉林大学机械科学与工程学院,长春130022 [2]沈阳航空航天大学机电工程学院,沈阳110136 [3]空军航空大学飞行器与动力系,长春130022

出　　处：《吉林大学学报（工学版）》2015年第2期442-447,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51175222);吉林省科技发展计划项目(20125008)

摘　　要：基于大量故障数据分析,对故障链类型进行分类。利用子系统相关故障率、相关系数和独立故障率之间的关系,建立了复杂系统故障相关系数模型,并以实例验证。本文解决了多系统复杂相关关系的相关系数计算问题,完善了相关系数理论体系,对精确可靠性设计、优化维修计划具有重要意义。The degree of interaction between dependent systems determines the error between the theory reliability and field reliability.So the dependent coefficient between the dependent systems is an important reference for design reliability and distribution reliability.However,the existing method can only estimate the dependent coefficient of a simple chain which includes two systems.In this work,the interaction in failure chains is classified after investigating large amount of failure data.Based on the types of failure chains,a model of dependent coefficient for complex system is developed using the function relationships among the dependent failure rate,independent failure rate and dependent coefficient of subsystems.A case study is carried out to verify the developed model.Results show that the model can estimate the dependent coefficient of a complex system,and improve the theory.It is very important to more precisely design the reliability growth and to optimize the repair and maintenance schedules.

关 键 词：机床 相互作用故障 相关系数 复杂系统 可靠性 故障链 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]