| 一类非线性级联系统的鲁棒镇定 |
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| 引用本文： | 齐玉峰,董亚丽,冯玉娟.一类非线性级联系统的鲁棒镇定[J].天津工业大学学报,2005,24(6):50-53. |
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| 作者姓名： | 齐玉峰 董亚丽 冯玉娟 |
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| 作者单位： | 天津工业大学,理学院,天津,300160 |
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| 基金项目： | 天津市高等学校科技发展基金资助项目（20051527）. |
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| 摘 要： | 研究一类非线性不确定级联系统的鲁棒镇定问题．根据系统的结构特性，将非线性级联系统转化为基子系统和扩张子系统，在基子系统全局渐近镇定的假设下，根据局部线性化模型的二次可镇定性，构造出非二次李雅普诺夫函数，进而设计出鲁棒镇定控制器．在该控制器作用下的闭环系统，是鲁棒全局渐近稳定和局部二次稳定的．
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| 关 键 词： | 非线性控制 级联系统 鲁棒镇定 |
| 文章编号： | 1671-024X（2005）06-0050-04 |
| 收稿时间： | 2005-01-13 |
| 修稿时间： | 2005年1月13日 |
Robust stabilization of a class of nonlinear cascade systems |
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| QI Yu-feng,DONG Ya-li,FENG Yu-juan.Robust stabilization of a class of nonlinear cascade systems[J].Journal of Tianjin Polytechnic University,2005,24(6):50-53. |
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| Authors: | QI Yu-feng DONG Ya-li FENG Yu-juan |
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| Abstract: | The problem of robust stabilization for a class of uncertain nonlinear cascade systems is researched. According to the structure characteristic of the system, an approach is presented to transform the cascade system into a base subsystem and extension subsystem. Via the assumption that the base system is globally asymptotically sta- bilizable, according to the quadratic stabilizability of the local linear model, a non-quadratic lyapunov function is structured and the control law is designed. Then the closed-loop system controlled by that controller is globally asymptotically stable and local quadratically stable. |
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| Keywords: | nonlinear control cascade system robust stabilization |
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