输出测量延时系统基于降阶观测器的鲁棒控制 |
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引用本文: | 焦晓红,刘晓飞.输出测量延时系统基于降阶观测器的鲁棒控制[J].东北重型机械学院学报,2011(3):228-234. |
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作者姓名: | 焦晓红 刘晓飞 |
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作者单位: | 燕山大学电气工程学院,河北秦皇岛066004 |
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基金项目: | 国家自然科学基金资助项目(60774018); 河北省自然科学基金资助项目(F2010001322) |
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摘 要: | 针对具有输出测量延时且状态不完全可测的一类非线性不确定系统,研究了基于降阶观测器的鲁棒输出反馈控制策略。首先给出了渐近稳定降阶观测器的构造,然后根据Lyapunov-Krasovskii泛函稳定性理论给出了系统存在基于降阶观测器的鲁棒镇定控制器的充分条件。最后给出了一个数例以及一个液压伺服驱动的冷带轧机厚度系统实例的仿真研究,仿真研究结果验证了所提出控制策略的有效性。
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关 键 词: | 输出测量延时 降维观测器 鲁棒输出反馈 非线性不确定系统 |
Reduced-order observer-based robust control for systems with output measurement delay |
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Authors: | JIAO Xiao-hong LIU Xiao-fei |
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Affiliation: | (College of Electrical Engineering,Yanshan University,Qinhuangdao,Hebei 066004,China) |
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Abstract: | In view of the case that time-delay arises in the output measurements and system states are not all measurable,a reduced-order observer-based robust control strategy is proposed for a class of uncertain nonlinear systems.A reduced-order asymptotically stable observer first is constructed for the uncertain nonlinear system with output delay.And then based on Lyapunov-Krasovskii functional stability theory,a sufficient condition is given under which there exists a reduced-order observer-based robust stabilizing controller.Moreover,simulation results for a numerical example and a cold strip rolling mill HAGC system are given to demonstrate the effectiveness of the proposed control scheme. |
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Keywords: | output measurement delay reduced-order observer robust output feedback uncertain nonlinear systems |
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