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Improving multiple fault diagnosability using possible conflicts
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Bregon, Anibal Pulido, Belarmino Koutsoukos, Xenofon Biswas, Gautam Daigle, Matthew J. |
| Copyright Year | 2012 |
| Description | Multiple fault diagnosis is a difficult problem for dynamic systems. Due to fault masking, compensation, and relative time of fault occurrence, multiple faults can manifest in many different ways as observable fault signature sequences. This decreases diagnosability of multiple faults, and therefore leads to a loss in effectiveness of the fault isolation step. We develop a qualitative, event-based, multiple fault isolation framework, and derive several notions of multiple fault diagnosability. We show that using Possible Conflicts, a model decomposition technique that decouples faults from residuals, we can significantly improve the diagnosability of multiple faults compared to an approach using a single global model. We demonstrate these concepts and provide results using a multi-tank system as a case study. |
| File Size | 326066 |
| Page Count | 6 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140004901 |
| Archival Resource Key | ark:/13960/t24b82s7k |
| Language | English |
| Publisher Date | 2012-08-29 |
| Access Restriction | Open |
| Subject Keyword | Multiple Faults Diagnosability Fault Diagnosis System Failures Error Analysis Fault Detection Failure Analysis Reliability Engineering Models System Identification Dynamical Systems Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
