Observer-based fault detection and isolation for structured systems

被引：52
|
作者：
Commault, C [1 ]
Dion, JM [1 ]
Senante, O [1 ]
Motyeian, R [1 ]
机构：
[1] CNRS, INPG, Lab Automat Grenoble, F-38402 St Martin Dheres, France
来源：
IEEE TRANSACTIONS ON AUTOMATIC CONTROL | 2002年 / 47卷 / 12期
关键词：
fault detection and isolation; graph theory; model-based approach; structured residuals; structured systems;
D O I：
10.1109/TAC.2002.805673
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Fault detection and isolation (FDI) problems are here considered for linear systems with faults and disturbances. We design a set of observer-based residuals in such a way that the transfer from the disturbances to the residuals is zero, and the transfer from the faults to the residuals allows fault isolation. We are interested in obtaining a transfer function from faults to residuals with either a diagonal structure (Le, a dedicated structured residuals set) or a triangular one. We deal with this problem when the system under consideration is structured. That is, the entries of the system matrices are either fixed zeros or free parameters. To a structured system, one am associate in a natural way a directed graph. We can then provide necessary and sufficient conditions under which the FDI problems have a solution for almost any value of the free parameters. These conditions are simply expressed in terms of input-output paths in the associated graph.
引用
收藏
页码：2074 / 2079
页数：6
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