基于比例危险模型的船用柴油机视情维修决策  

Decision-making method for condition-based maintenance of marine diesel engine based on proportional hazard model

作　　者：周志才[1] 刘东风[1] 石新发[1] 

机构地区：[1]海军工程大学动力工程学院,武汉430033

出　　处：《海军工程大学学报》2014年第6期69-72,共4页Journal of Naval University of Engineering

基　　金：国家部委基金资助项目(HW2013526)

摘　　要：针对船用柴油机视情维修决策问题,采用威布尔比例危险模型描述了系统状态与故障率之间的关系,利用核主成分分析对协变量进行了去相关和约简处理,以平均费用最小为决策目标,建立了视情维修的最优维修策略模型,并根据设备当前状态信息来判断是否需要进行维修。实例分析表明:该方法有效融合了历史故障信息和运行状态信息,提高了柴油机可用度,降低了维修保障费用。To solve the problems in the decision-making of condition-based maintenance of the marine diesel engine, Weibull proportional hazard model is used to describe the relationship between the system state and the failure rate, and the covariatesr correlation is eliminated by Kernel principal component analysis. Also, the model of optimal maintenance strategy for condition-based maintenance is established with the minimum costs as the goal. Whether it needs maintenance or not is based on the current device status information. The example indicates that the method can effectively combine the historical fault information and running status information to improve the availability and reduce the maintenance costs of marine diesel engine.

关 键 词：视情维修 威布尔比例危险模型 核主成分分析 船用柴油机 

分 类 号：TK428[动力工程及工程热物理—动力机械及工程]