Composite anti-disturbance control for Markovian jump nonlinear systems via disturbance observer

Composite anti-disturbance control for Markovian jump nonlinear systems via disturbance observer
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基于扰动观测器的马尔可夫跳跃非线性系统复合抗扰控制

DOI:
10.1016/j.automatica.2013.05.002
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发表时间:
2013-08
期刊:
影响因子:
6.4
通讯作者:
Guo, Lei
Guo, Lei
中科院分区:
计算机科学2区
文献类型:
--
作者:
Yao, Xiuming;Guo, Lei

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研究了非线性多扰动马尔可夫跳变系统的基于扰动-观测器的复合控制(DOBC)和h∞控制问题。我们的目标是设计一个干扰观测器来估计外源系统产生的干扰,然后通过将干扰观测器的输出与状态反馈控制律相结合来构造控制方案,从而保证闭环系统是随机稳定的,并且可以衰减和拒绝不同类型的干扰。通过构造一个适当的随机Lyapunov-Krasovskii泛函,用线性矩阵不等式(lmi)建立了期望观测器和状态反馈控制器存在的充分条件,该条件可以很容易地用标准数值软件求解。最后,通过数值算例验证了所提方法的有效性。
This paper is concerned with the problems of composite disturbance-observer-based control (DOBC) and ℋ∞control for Markovian jump systems with nonlinearity and multiple disturbances. Our aim is to design a disturbance observer to estimate the disturbance generated by an exogenous system, then construct the control scheme by integrating the output of the disturbance observer with state-feedback control law, such that, the closed-loop system can be guaranteed to be stochastically stable, and different types of disturbances can be attenuated and rejected. By constructing a proper stochastic Lyapunov–Krasovskii functional, sufficient conditions for the existence of the desired observer and the state-feedback controller are established in terms of linear matrix inequalities (LMIs), which can be readily solved by standard numerical software. Finally, a numerical example is provided to show the effectiveness of the proposed approaches.
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