Abstract
It is a significant approach to derive Analytical Redundancy Relations (ARRs) for fault detection and isolation (FDI) based on ARR. It is quite difficult to obtain the ARRs for a nonlinear dynamic system by eliminating the unknown variables. The DBG model has been constructed by introducing observed signal and virtual sensors into bond graph model of the system. Then the ARRs for complex dynamic system and fault signature matrix can be established according the causality of DBG. The faults can be isolated by comparison of observed signature and fault signature. Through the analysis of a five-tank system, the validity and practicability of the method of constructing ARRs by DBG have been verified.
| Original language | English |
|---|---|
| Pages (from-to) | 924-927 |
| Number of pages | 4 |
| Journal | Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology |
| Volume | 39 |
| Issue number | 6 |
| State | Published - Jun 2007 |
| Externally published | Yes |
Keywords
- Analytical redundancy relation
- Diagnostic bond graph
- Fault detection
- Fault isolation
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