期刊
INTERNATIONAL JOURNAL OF CONTROL
卷 -, 期 -, 页码 -出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207179.2022.2155996
关键词
Adaptive output feedback control; dynamic gain; neural network (NN); nonlinear time-delay systems
资金
- National Natural Science Foundation of China
- Taishan Scholarship Project of Shandong Province
- Shandong Provincial Natural Science Foundation
- [61873330]
- [Ts2022]
- [ZR2021ZD13]
This paper proposes a solution to the adaptive output feedback control design problem for a class of nonlinear systems with unknown state time delays, by combining dynamic gain and neural networks, and designing an adaptive neural network output feedback controller.
This paper addresses the adaptive output feedback control design problem for a class of nonlinear systems with unknown state time delays by combining the dynamic gain and neural network. A novel reduced-order dynamic gain observer is introduced to estimate the unmeasured system states. Radial basis function neural networks (RBF NNs) are used to approximate unknown functions. An adaptive NN output feedback controller is designed based on the backstepping technique. By arranging the proper Lyapunov-Krasovskii functional, we prove that all the signals in the closed-loop system are semi-globally uniformly ultimately bounded. Finally, a physical example and a numerical example are given to prove the effectiveness of the proposed control scheme.
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