Journal
IEEE SYSTEMS JOURNAL
Volume 13, Issue 2, Pages 1981-1990Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSYST.2018.2800710
Keywords
H-infinity control; fault-tolerant control (FTC); observer-based control; sensor and actuator fault
Categories
Funding
- Brain Research Program through the National Research Foundation of Korea - Ministry of Science, CT and Future Planning [NRF-2017M3C7A1044815]
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In this paper, the design problem of H-infinity observer-based fault-tolerant control is considered for three faulty cases: sensor only, actuator only, and both sensor and actuator faults. The observers are designed for estimating both states and faults. To reduce the fault effects on the system, virtual observers are first introduced. Based on the virtual observer, real observers are established because the virtual observers include unmeasurable information of the system. By using the estimated information from the observers, observer-based H-infinity fault-tolerant controllers are designed. A numerical example is provided to demonstrate the effectiveness of the proposed method.
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