| 一类不确定非线性系统的参数自适应滑模控制 |
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| 引用本文： | 张元涛,石为人,邱明伯.一类不确定非线性系统的参数自适应滑模控制[J].华中科技大学学报(自然科学版),2011(5):79-82. |
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| 作者姓名： | 张元涛 石为人 邱明伯 |
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| 作者单位： | 重庆大学自动化学院;重庆华渝电气仪表总厂电气机械厂; |
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| 基金项目： | 重庆市科技攻关项目(CSTC2007AB3035) |
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| 摘 要： | 针对一类具有不确定性的非线性系统,考虑参数摄动、未建模动态和外界干扰等各种不确定性的综合影响,提出了一种基于切换增益和sigmoid函数边界层厚度的参数自适应滑模控制策略,采用李雅普诺夫稳定性理论证明了闭环系统全局稳定性.该控制方法消除了传统滑模控制的输入抖振现象,而且跟踪精度高,无须确知不确定项的界.仿真算例验证了该方法的有效性.
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| 关 键 词： | 非线性系统 不确定性 滑模控制 自适应控制 边界层 |
Parameter adaptive sliding mode control for a class of uncertain nonlinear systems |
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| Zhang Yuantao Shi Weiren Qiu Mingbai.Parameter adaptive sliding mode control for a class of uncertain nonlinear systems[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2011(5):79-82. |
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| Authors: | Zhang Yuantao Shi Weiren Qiu Mingbai |
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| Institution: | Zhang Yuantao1 Shi Weiren1 Qiu Mingbai2(1 College of Automation,Chongqing University,Chongqing 400030,Chi na,2 Electrical MachineryPlant,Chongqing Huayu Electric Instrument Chief-pl ant,Chongqing 400021,China) |
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| Abstract: | The effect of uncertainties was considered,and a new d irect adaptive sliding mode control was proposed.Through adaptive adjustment of the switching gain and sigmoid function boundary layer thickness,the closed-l oop system was robust and asymptotically stable in the sense of the Lyapunov sta bility.The controller can eliminate the input chattering and obtain high tracki ng precision without knowing the boundary of the uncertainties.The effectivenes s of the method was verified by the simulation results. |
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| Keywords: | nonlinear systems uncertainties sliding mode control adaptive control boundary layer |
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