| 基于扰动动态补偿的离散滑模变结构控制 |
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| 引用本文： | 瞿少成,王永骥.基于扰动动态补偿的离散滑模变结构控制[J].控制与决策,2004,19(3):311-314. |
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| 作者姓名： | 瞿少成 王永骥 |
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| 作者单位： | 1. 华中科技大学,控制科学与工程系,湖北,武汉,430074;江汉大学,物理与信息学院,湖北,武汉,430012
2. 华中科技大学,控制科学与工程系,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目(60274020,69974017). |
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| 摘 要： | 提出一种扰动动态补偿的离散趋近率，分析了不确定离散滑模控制系统的鲁棒性，研究了准滑动模态的存在条件及其动态特征，利用不确定条件下实际趋近率与理想趋近率的偏差，直接平滑地预测内部参数摄动与外部扰动，克服了常规变结构控制中需已知不确定性边界的限制，而且不必满足匹配条件，既保留了传统趋近率的所有优点，又有效地降低了系统的抖振，仿真结果证明了理论推导的正确性。
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| 关 键 词： | 滑模变结构控制 动态补偿 离散趋近率 鲁棒性 |
| 文章编号： | 1001-0920(2004)03-0311-04 |
Discrete time sliding mode control based on dynamic disturbance compensator |
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| QU Shao-cheng.Discrete time sliding mode control based on dynamic disturbance compensator[J].Control and Decision,2004,19(3):311-314. |
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| Authors: | QU Shao-cheng |
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| Affiliation: | QU Shao-cheng~ |
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| Abstract: | A novel discrete reaching law with dynamic disturbance compensator is presented for a class of uncertain systems. A measure of the uncertain parameters and external disturbance is obtained through the deviations between the practical reaching law and the desired reaching law. The robust stability with respect to uncertain system dynamics in the vicinity of the switching plane is examined in detail. It is shown that the dynamic features and robustness of the closed-loop system are improved effectively and all advantages of the reaching law are retained. Simulation results illustrate the features of the proposed scheme. |
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| Keywords: | sliding mode control dynamic compensator discrete reaching law robustness |
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