An adaptive fuzzy design for fault-tolerant control of MIMO nonlinear uncertain systems

An adaptive fuzzy design for fault-tolerant control of MIMO nonlinear uncertain systems
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MIMO非线性不确定系统容错控制的自适应模糊设计

DOI:
10.1007/s11768-011-8167-x
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发表时间:
2011-06
期刊:
Journal of Control Theory and Applications
影响因子:
--
通讯作者:
Yang, Guanghong
Yang, Guanghong
中科院分区:
其他
文献类型:
--
作者:
Li, Ping;Yang, Guanghong

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针对一类多输入多输出(MIMO)非线性不确定系统,提出了一种新的执行器故障自适应控制方法。所设计的控制方案可以容忍随时间变化的锁定到位和失效执行器故障。在所考虑的MIMO系统的每个子系统中,控制器是从一个backstepping过程中获得的,一个自适应模糊逼近器与最小的学习参数化,在每个设计步骤中的未知的非线性函数的包近似。另外,控制的努力,以处理的逼近误差和外部干扰一起。仿真结果表明,所提出的控制方案能够保证闭环系统的稳定性和期望的跟踪性能。最后通过一个算例验证了所设计控制器的有效性。
This paper presents a novel control method for accommodating actuator faults in a class of multiple-input multiple-output (MIMO) nonlinear uncertain systems. The designed control scheme can tolerate both the time-varying lock-in-place and loss of effectiveness actuator faults. In each subsystem of the considered MIMO system, the controller is obtained from a backstepping procedure; an adaptive fuzzy approximator with minimal learning parameterization is employed to approximate the package of unknown nonlinear functions in each design step. Additional control effort is taken to deal with the approximation error and external disturbance together. It is proven that the closed-loop stability and desired tracking performance can be guaranteed by the proposed control scheme. An example is used to show the effectiveness of the designed controller.
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