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An approach to design semi-global finite-time observers for a class of nonlinear systems

Science in China(Series F) 2009年第10期52卷 1746-1753页

作者： DENG XiuCheng SHEN YanJun College of Science China Three Gorges University Yichang 443002 China

In this paper, the problem of designing semi-global finite-time observers for a class of nonlinear systems is investigated. Based on the theories of finite-time stability, an approach to designing semi-global finite-time observers for the nonlinear systems is presented. It has been shown that, after the finite time, the designed finite-time observer realizes the accurate reconstruction of the states of the nonlinear system. A numerical example is given to illustrate the effectiveness and validity of the method.

关键词： Lyapunov stability finite-time observers high gain geometric homogeneity

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An Approach to Design Global finite-time observers for a Class of Nonlinear Systems

An Approach to Design Global Finite-time Observers for a Cla...

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第三十届中国控制会议

作者： DENG Xiucheng College of Science,China Three Gorges University,Yichang Hubei,443002,P.R.China

＜正＞In this paper,the problem of designing global flnite-time observers is investigated for a class of nonlinear systems which are uniformly observable and globally *** on the theories of globally asymptotic stability and flnite-time stability at the origin of the system,an approach to design global flnite-time observers for the nonlinear system is *** has been shown that,the global flnite-time observer designed possesses advantages of in rapid speed and high precision over traditional observers which realize asymptotic reconstruction of the states of the systems.

关键词： Nonlinear Systems Global Asymptotic Stability Lyapunov Stability High Gain finite-time observers

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An approach to design semi-global finite-time observers for a class of nonlinear systems

An approach to design semi-global finite-time observers for ...

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2009年中国智能自动化会议

作者： DENG XiuCheng~+ & SHEN YanJun College of Science,China Three Gorges University,Yichang 443002,China

In this paper,the problem of designing semi-global finite-time observers for a class of nonlinear systems is *** on the theories of finite-time stability,an approach to designing semi-global finite-time observers for the nonlinear systems is *** has been shown that,after the finite time,the designed finite-time observer realizes the accurate reconstruction of the states of the nonlinear system.A numerical example is given to illustrate the effectiveness and validity of the method.

关键词： Lyapunov stability finite-time observers high gain geometric homogeneity

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