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Sliding mode observers for detection and reconstruction of sensor faults. (English) Zbl 1011.93505

Summary: This paper proposes two methods for detecting and reconstructing sensor faults using sliding mode observers. In both methods, fictitious systems are introduced in which the original sensor fault appears as an actuator fault. The original sensor faults are then reconstructed using a ‘secondary’ sliding mode observer. For both methods, there are certain conditions which must be satisfied for successful fault detection and reconstruction. The methods are demonstrated using a chemical process example.

MSC:

93B07 Observability
90B25 Reliability, availability, maintenance, inspection in operations research
93B12 Variable structure systems
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