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Sliding mode observers for robust detection and reconstruction of actuator and sensor faults. (English) Zbl 1036.93025
The paper presents a method for robust reconstruction of faults using sliding mode observers that minimize the effect of system uncertainty on the reconstruction using the H approach. First, the results for actuator faults are given. Then, they are extended to sensor faults by the introduction of a suitable filter. It enables one to treat sensor faults as actuator faults. The effectiveness of both methods is illustrated on an example.
MSC:
93B51Design techniques in systems theory
93B12Variable structure systems
93B07Observability
90B25Reliability, availability, maintenance, inspection, etc. (optimization)