Nonlinear disturbance observer-based control for multi-input multi-output nonlinear systems subject to mismatching condition

Nonlinear disturbance observer-based control for multi-input multi-output nonlinear systems subject to mismatching condition
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失配条件下多输入多输出非线性系统的非线性扰动观测器控制

DOI:
10.1080/00207179.2012.675520
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发表时间:
2012-06
期刊:
International Journal of Control (影响因子:1.008)
影响因子:
--
通讯作者:
陈文华
陈文华
中科院分区:
其他
文献类型:
--
作者:
杨俊;李世华;陈文华

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对于一个多输入多输出(MIMO)非线性系统,现有的基于干扰观测器的控制(DOBC)仅为那些干扰相对阶(DRD)高于或等于其输入相对阶的系统提供解决方案。通过设计一个……
For a multi-input multi-output (MIMO) nonlinear system, the existing disturbance observer-based control (DOBC) only provides solutions to those whose disturbance relative degree (DRD) is higher than or equal to its input relative degree. By designing a novel disturbance compensation gain matrix, a generalised nonlinear DOBC method is proposed in this article to solve the disturbance attenuation problem of the MIMO nonlinear system with arbitrary DRD. It is shown that the disturbances are able to be removed from the output channels by the proposed method with appropriately chosen control parameters. The property of nominal performance recovery, which is the major merit of the DOBCs, is retained with the proposed method. The feasibility and effectiveness of the proposed method are demonstrated by simulation studies of both the numerical and application examples.
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