| 单输入单输出非线性系统全局有限时间观测器设计 |
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| 引用本文： | 刘万海,沈艳军,王康,江清华.单输入单输出非线性系统全局有限时间观测器设计[J].三峡大学学报(自然科学版),2010,32(5):75-81. |
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| 作者姓名： | 刘万海 沈艳军 王康 江清华 |
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| 作者单位： | 三峡大学理学院,湖北宜昌443002 |
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| 基金项目： | 国家自然科学基金项目，湖北省自然科学基金项目，湖北省教育厅重点项目 |
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| 摘 要： | 对于一类单输入单输出(SISO)具有下三角结构的非线性系统,运用几何齐次理论、Lyapunov稳定性理论和有限时间稳定理论,设计了一个高增益观测器.所设计的观测器由线性部分和非线性部分组成,线性部分保证误差系统全局渐近稳定,非线性部分保证误差系统在有限时间内收敛到原点.仿真实例验证了设计的有效性.
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| 关 键 词： | 有限时间稳定 观测器 高增益 非线性系统 |
Design of a Global Finite-time Observer for SISO Nonlinear System |
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| Liu Wanhai,Shen Yanjun,Wang Kang,Jiang Qinghua.Design of a Global Finite-time Observer for SISO Nonlinear System[J].Journal of China Three Gorges University(Natural Sciences),2010,32(5):75-81. |
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| Authors: | Liu Wanhai Shen Yanjun Wang Kang Jiang Qinghua |
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| Institution: | (College of Science,China Three Gorges Univ.,Yichang 443002,China) |
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| Abstract: | A high gain observer is designed base on homogeneous theory,Lyapunov stable theory and finite-time stable theory for a class of single input/single output（SISO） nonlinear system.The observer consists of a linear part and a nonlinear part.In particular,linear part is designed in order to ensure the global asymptotic stability of error system;while nonlinear part is designed in order to ensure error system converges at zero in finite time.Finally,the effectiveness of the design is verified by a simulation example. |
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| Keywords: | finite-time stable observer high gain nonlinear system |
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