4.6 Article

T-S Fuzzy Control of Uncertain Fractional-Order Systems with Time Delay

期刊

JOURNAL OF MATHEMATICS
卷 2021, 期 -, 页码 -

出版社

HINDAWI LTD
DOI: 10.1155/2021/6636882

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资金

  1. Scientific Research Project of Guangxi University for Nationalities [2020KJYB002]
  2. Innovation Project of Guangxi University for Nationalities Graduate Education [gxun-chxps201908, gxun-chxkc201903]

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This article discusses the adaptive control of uncertain fractional-order time-delay systems using a fuzzy adaptive method and robust controller design. Simulation examples demonstrate the effectiveness of the proposed method in stabilizing the system state and keeping the signals bounded within the FOTDS.
In this article, the adaptive control of uncertain fractional-order time-delay systems (FOTDSs) with external disturbances is discussed. A Takagi-Sugenu (T-S) fuzzy model with if-then rules is adopted to characterize the dynamic equation of the FOTDS. Besides, a fuzzy adaptive method is proposed to stabilize the model. By utilizing the Lyapunov functions, a robust controller is constructed to stabilize the FOTDS. Due to the uncertainty of system parameters, some fractional-order adaptation laws are designed to update these parameters. At the same time, some if-then rules with linear structure based on the fuzzy T-S adaption concept are established. The designed method not only guarantees that the state of closed-loop system asymptotically converges to origin but also keeps the signal in the FOTDS bounded. Finally, the applicability of the control method is proved by simulation examples.

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