期刊
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
卷 35, 期 8, 页码 2762-2788出版社
SPRINGER BIRKHAUSER
DOI: 10.1007/s00034-015-0174-6
关键词
Switched stochastic systems; Adaptive fuzzy control; Output-feedback; Time-delay; Reduced-order observer
资金
- National Nature Science Foundation of China [61304054, 61403041, 61403354]
- Program for Liaoning Provincial Excellent Talents in University, China [LJQ2014122]
In this paper, a design scheme for an adaptive fuzzy tracking controller is proposed for a class of switched stochastic nonlinear time-delay systems via dynamic output-feedback. First, a reduced-order observer is introduced to estimate the unmeasurable states of the switched system. During the adaptive controller design procedure, an appropriate stochastic Lyapunov-Krasovskii functional deals with the time-delay terms, and fuzzy logic systems are employed to approximate the unknown nonlinearities. Based on the designed controller, the semi-globally uniform ultimate boundedness of all the closed-loop signals is guaranteed and the tracking error converges to a small neighborhood of the origin. Finally, a simulation example is given to illustrate the validity of the proposed approach.
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