基于LPS模型的飞行器控制系统故障诊断方法

传统故障诊断方法一般针对测量信号而展开,未考虑其实际物理连接特性对故障诊断结果的显著影响。随着专业电气系统设计软件的广泛应用,设计人员容易获取系统的物理连接特性和逻辑连接特性。论文通过对产品层、系统层的信号、物理连接及其互连关系的分析,提出了一种将抽象的逻辑信号和具体的物理连线统一起来的逻辑物理综合(LPS)模型,并研究了基于导线表文件和网表文件的LPS模型实例化方法,开发了一套智能故障检测软件,进行了算例验证,结果表明：基于LPS模型的故障诊断方法能够将系统故障定位到指定产品级别上,具有极大的工程应用价值。

A Fault Diagnosis Approach Research Based on LPS Model for Flight Control System

The traditional fault diagnosis method is generally based on the measuring signal, without considering the actual physical connection characteristics, but this characteristics effects the diagnosis results. With the wide application of professional electric system design software, system designers easily obtain the physical connection characteristics and logical connection characteristics. By analyzing the signals of product layer or system layer, physical connection and its interconnected relationship, the paper presents a set of logical physical synthetically (LPS) model which willSunify abstract signal and physical connection, and to study the LPS model instantiation method based on wire table and net table, and develops a set of intelligent fault detection software. An example for validation show: fault diagnosis method based on LPS model could isolate the fault to the specified product level, with great engineering application value.