摘要
针对定期维修存在的缺点,提出以威布尔比例风险模型(Weibull proportional hazards model,WPHM)作为状态描述模型,对装备进行基于状态的维修决策。针对装备的独特任务属性,通过构造决策目标函数对状态维修行为和状态检测间隔期两类决策内容进行了研究。以转移概率的形式描述了状态协变量的劣化过程,以条件可用度最大化为目标提出了预防性维修和变步长检测的状态维修决策模型以及计算方法。最后,以某型发动机为例,对决策方法的适用性和合理性进行了验证。
Aiming at the disadvantage of periodic maintenance, a condition description model of equipment based on Weibull proportional hazards model （WPHM） is proposed and taken as the foundation for conditionbased maintenance （CBM） decision-making. In terms of the most emphasized tasks properties in equipment, CBM actions and condition inspection intervals are studied as the major contents which take the availability as decision-making objective function. The deteriorate process of covariate condition is presented in the form of transition matrix, and the maximized conditional availability is taken as the optimization target to determine the detailed decision-making methods and related algorithm. Finally, a case study is illustrated to verify the feasibility and reasonability of the method.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2015年第6期1325-1330,共6页
Systems Engineering and Electronics
基金
军队科研计划项目(51327020303)资助课题
关键词
状态维修决策
比例风险模型
状态协变量
检测间隔期
condition-based maintenance decision-making
proportional hazards model （PHM）
eovariate parameter
inspection interval
