基于Petri网的复杂设备健康状态退化分析  

Health degradation analysis of complex equipment based on Petri nets

作　　者：王亮[1] 吕卫民[1] 滕克难[2] 金永川 

机构地区：[1]海军航空工程学院七系 [2]海军航空工程学院训练部 [3]中国人民解放军91681部队

出　　处：《系统工程与电子技术》2014年第10期1973-1981,共9页Systems Engineering and Electronics

基　　金：国家部委预研基金(9140A27020210JB1404;9140A19030811JB1401)资助课题

摘　　要：针对大型设备结构复杂,健康状态难以评估的问题,以设备最小可监测或可评估单元健康状态为输入,建立了健康退化Petri网模型,利用健康等级信度的变化描述复杂设备全系统各层次单元的健康状态退化情况。首先给出了健康退化Petri网的定义,分析了库所间"冗余"、"共同"、"并发"以及"继发"四种关系形式,用以评估各层次单元健康状态;然后分析了健康状态信度转换为健康度的规则并给出一种线性映射方法;根据健康状态退化趋势特点,在离散灰色模型中引入非线性时变项,提出了基于粒子群优化的拓展非线性时变参数离散灰色模型的健康度预测算法。最后将模型应用于某发射装置的健康状态退化分析,说明了模型的适用性。Due to the complex structures of large equipment, it is difficult to assess heath conditions of large equipment accurately. To solve this problem, health degradation Petri nets （HDPN） is presented. In this model, degradation information of the minimum monitoring units is taken as the input. The degradation of health conditions is described by the changes of the credibility of health grades. Four types of relationships between places are analyzed to assess health conditions accurately. Then, the transforming rules between health degree and health credibility are proposed. According to the characteristics of the health condition degradation, non-linear time-varying parameters are introduced in the discrete grey model, which is used to forecast health conditions. Finally, health degradation of some launcher is analyzed by using the proposed model. Results show that this model is practicable.

关 键 词：PETRI网 复杂系统 健康状态评估与预测 证据理论 离散灰色模型 

分 类 号：TH17[机械工程—机械制造及自动化] TP206[自动化与计算机技术—检测技术与自动化装置]