Adaptive fuzzy control of MIMO nonstrict-feedback nonlinear systems with fuzzy dead zones and time delays

Adaptive fuzzy control of MIMO nonstrict-feedback nonlinear systems with fuzzy dead zones and time delays
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具有模糊死区和时滞的 MIMO 非严格反馈非线性系统的自适应模糊控制

DOI:
10.1007/s11071-018-4645-8
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发表时间:
2018-11
期刊:
影响因子:
5.6
通讯作者:
W. Zhang
W. Zhang
中科院分区:
工程技术2区
文献类型:
--
作者:
H. Su;W. Zhang

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本文提出了一类具有模糊死区、时滞和不可测状态的多输入和多输出非线性非严格反馈系统的自适应模糊控制。将反步技术与动态表面控制相结合,每个子系统只需要一种自适应律,简化了整个设计过程。与现有多输入多输出非线性系统的研究相比,本文的主要贡献在于所开发的非线性系统的死区模型是模糊和不确定的,并且所考虑的系统更加一般化。所设计的控制器不仅保证了给定的目标信号能够在较小的误差范围内跟踪,而且保证了闭环系统中所有信号的有界性。最后,仿真结果证明了我们提出的控制算法的有效性。
This paper addresses an adaptive fuzzy control for a class of multi-input and multi-output nonlinear nonstrict-feedback systems with fuzzy dead zones, time delays and immeasurable states. Combining backstepping technique with dynamic surface control, only one adaptive law is required for each subsystem, and the whole design procedure is simplified. Compared with the existing researches on multi-input and multi-output nonlinear systems, the main contributions of this paper lie in that the dead zone models of the developed nonlinear system are fuzzy and uncertain, and the systems under consideration are more general. The designed controller not only guarantees that the given target signals can be tracked within small errors, but also guarantees the boundedness of all the signals in the closed-loop system. Finally, simulation results are depicted to demonstrate the effectiveness of our proposed control algorithm.
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