Journal
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
Volume 43, Issue 4, Pages 629-640Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207721.2010.517867
Keywords
fault compensation; fault estimation; switched system; time delay
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Funding
- National Natural Science Foundation of P.R. China [60874051, 60804011, 60904001]
- Doctoral Dissertation Innovation and Excellence Foundation of Nanjing University of Aeronautics and Astronautics [BCXJ10-03]
- Engineering and Physical Sciences Research Council, UK [EP/F029195]
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In this article, the problems of sensor fault estimation and compensation approaches for time-delay switched systems are investigated based on a switched descriptor observer approach. First, a novel time-delay switched descriptor state observer is proposed to estimate both the state and sensor fault. The proposed observer technique is also extended to systems with nonlinearities. Then, based on the estimation of the sensor fault, an efficient fault-tolerant operation can be realised via sensor fault compensation. Finally, an example is given to show the efficiency of the developed techniques.
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