Design of fault diagnosis observer for HAGC system on strip rolling mill

被引：6

作者：

Dong Min ^{[1
]}

Liu Cai ^{[1
]}

机构：

[1] Yanshan Univ, Coll Mech Engn, Qinhuangdao 066004, Hebei, Peoples R China

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2006年 / 13卷 / 04期

基金：

中国国家自然科学基金;

关键词：

HAGC; mathematical model; unknown input observer; fault diagnosis;

D O I：

10.1016/S1006-706X(06)60072-1

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

By building mathematical model for HAGC (hydraulic automation gauge control) system of strip rolling mill, treating faults as unknown inputs induced by model uncertainty, and analyzing fault direction, an unknown input fault diagnosis observer group was designed. Fault detection and isolation were realized through making observer residuals robust to specific faults but sensitive to other faults. Sufficient existence conditions and design of the observers were given in detail. Diagnosis observer parameters for servo-valve, cylinder, roller and body rolling mill were obtained respectively. The effectiveness of this diagnosis method was proved by actual data simulations.

引用

页码：27 / 31

页数：5