| 一类最小相位随机非线性系统的输出反馈控制及扰动抑制 |
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| 引用本文： | 夏媛,季海波.一类最小相位随机非线性系统的输出反馈控制及扰动抑制[J].中国科学技术大学学报,2011,41(8). |
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| 作者姓名： | 夏媛 季海波 |
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| 作者单位： | 中国科学技术大学自动化系,安徽合肥,230027 |
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| 基金项目： | 国家自然科学基金(60674029)资助 |
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| 摘 要： | 对于一类具有模型不确定性的最小相位随机非线性系统,研究输出反馈控制使闭环系统状态响应对噪声具有扰动抑制作用,并且无噪声时闭环系统是随机渐近稳定的.首先假设模型系统中的一个子系统随机输入状态稳定,并且系统的漂移项与扩散项分别依赖于该子系统的状态和输出信号,在此假设前提下设计一个降阶观测器,得到一个等价系统,再由递推的方法得出等价系统的输出反馈控制律,使得最终得到的闭环系统对噪声方差是输入状态稳定的.
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| 关 键 词： | 随机非线性系统 输出反馈 降维观测器 |
Output feedback control and disturbance attenuation for minimum-phase stochastic nonlinear systems |
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| XIA Yuan,JI Haibo.Output feedback control and disturbance attenuation for minimum-phase stochastic nonlinear systems[J].Journal of University of Science and Technology of China,2011,41(8). |
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| Authors: | XIA Yuan JI Haibo |
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| Institution: | XIA Yuan,JI Haibo(Department of Automation,University of Science and Technology of China,Hefei 230027,China) |
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| Abstract: | A class of minimum-phase stochastic nonlinear systems with model uncertainty was dealt with.In order to obtain an output feedback control which can make the response of a closed-loop system attenuate noise,and when noise does not exist,the closed-loop system will be stochastically asymptotically stable.First,an assumption was made,in which the a subsystem in the model system was stochastic input state stable,and the drift and diffusion components in the system both depended on the state of the subsystem and... |
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| Keywords: | stochastic nonlinear systems out-put feedback reduced-order observer |
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