Adaptive fuzzy output feedback control of uncertain nonlinear systems with nonsymmetric dead-zone input

Adaptive fuzzy output feedback control of uncertain nonlinear systems with nonsymmetric dead-zone input
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非对称死区输入不确定非线性系统的自适应模糊输出反馈控制

DOI:
10.1007/s11071-010-9836-x
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发表时间:
2011-03
期刊:
影响因子:
5.6
通讯作者:
Tong, Shao-Cheng
Tong, Shao-Cheng
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhou, Ning;Liu, Yan-Jun;Tong, Shao-Cheng

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针对一类具有未知非对称死区非线性的不确定非线性系统,提出了一种自适应控制方案。假设系统状态是不可测量的。因此,设计了一个观测器来估计这些未测量的状态。控制器的设计采用反推控制设计方法。所提出的自适应方案只需要死区斜率有界的信息。新的控制方案保证了有界误差轨迹跟踪和闭环系统中所有信号的有界性。最后通过一个仿真算例验证了该方法的可行性。
In this paper, we present an adaptive control scheme for a class of uncertain nonlinear system with unknown nonsymmetric dead-zone nonlinearity. It is assumed that the system states are unmeasurable. Therefore, an observer is designed to estimate those unmeasured states. The controller is designed by using the backstepping control design procedure. The proposed adaptive scheme requires only the information that the dead-zone slopes are bounded. The new control scheme ensures bounded-error trajectory tracking and the boundedness of all the signals in the closed-loop. The feasibility is investigated by an illustrative simulation example.
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