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基于电气系统故障诊断的逻辑物理综合建模方法

黄哲志 a,王安 a,曾庆华 a,龙志强 b   

  1. (国防科学技术大学 a.航天科学与工程学院; b.机电工程与自动化学院,长沙 410073)
  • 收稿日期:2016-03-28 出版日期:2017-06-15 发布日期:2017-06-15
  • 作者简介:黄哲志(1986—),男,硕士,主研方向为控制系统测试、故障诊断;王安,硕士;曾庆华、龙志强,研究员。
  • 基金项目:
    国家自然科学基金(61174120)。

Logical Physical Synthetically Modeling Method Based on Fault Diagnosis in Electrical System

HUANG Zhezhi  a,WANG An  a,ZENG Qinghua  a,LONG Zhiqiang  b   

  1. (a.College of Aerospace Science and Engineering; b.College of Mechatronic Engineering and Automation,National University of Defense Technology,Changsha 410073,China)
  • Received:2016-03-28 Online:2017-06-15 Published:2017-06-15

摘要: 基于建模的故障诊断方法直观、可重构、效率高,但当前主要对电气系统的信号/功能进行建模,难以准确地将故障定位到电气系统中具体的物理位置。针对上述问题,将逻辑物理综合模型扩展应用到通用电气系统故障诊断,提出电气系统的逻辑物理综合建模原理,给出层次化建模、可更换单元合并处理、信号反馈闭环通路及故障模式自动关联等建模处理策略,以三角波发生器电路为例,说明电气系统逻辑物理综合建模的实现过程。实例结果表明,该逻辑物理综合建模方法可以将诊断过程和结果直观地显示出来,适用于通用电气系统的故障诊断。

关键词: 逻辑物理综合, 相关性, 电气系统, 故障诊断, 建模处理策略

Abstract: The fault diagnosis method based on modeling is intuitional,reconfigurable and also effective.However,modeling the signal/function of electrical system can hardly locate the physical position of the fault.Therefore,this paper expands Logical Physical Synthetically(LPS) model to the application of fault diagnosis in general electrical system.It proposes the principle of LPS modeling in electric system,and presents a hierarchical modeling,merge processing in Replaceable Unit(RU),signal feedback closed-loop path,automatic fault mode correlation and other modeling processing strategies.Taking a triangle wave generator circuit as an example,this paper also shows the modeling process of LPS modeling in electrical system,which indicates that LPS modeling method can be applied in general fault diagnosis in electrical system.The diagnostic process and the result can be visually displayed.

Key words: Logical Physical Synthetically(LPS), correlation, electrical system, fault diagnosis, modeling processing strategy

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