期刊
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
卷 48, 期 8, 页码 1411-1419出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSMC.2017.2679345
关键词
High-order sliding mode observers; reduced-order observer; switched descriptor systems; unknown input reconstruction
资金
- National Nature Science Foundation of China [61573256, 61573069]
This correspondence paper is concerned with observer design problems for a class of unknown input switched descriptor systems under average dwell time switching signals. The switched descriptor system under consideration is first transformed into a general switched linear system. and then a switched reduced-order observer that can asymptotically estimate the system state without suffering the influence from the unknown inputs is developed. Besides, a high-order sliding mode observer is introduced to obtain the estimations of the output derivatives by using the system measured outputs. On the basis of estimations of the stales and output derivatives, an unknown input reconstructing method is provided. Finally. two examples are presented to verify the effectiveness of the proposed approaches.
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