| 具有噪声扰动的统一混沌系统的同步控制 |
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| 引用本文： | 陈秀琴,沈志萍,李文林.具有噪声扰动的统一混沌系统的同步控制[J].电光与控制,2008,15(8). |
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| 作者姓名： | 陈秀琴 沈志萍 李文林 |
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| 作者单位： | 河南师范大学数学与信息科学学院,河南,新乡,453007 |
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| 基金项目： | 国家自然科学基金
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河南省自然科学基金 |
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| 摘 要： | 研究了一类具有噪声扰动的统一混沌系统的同步控制问题。基于滑模变结构控制理论,提出了利用不确定性观测器估计扰动噪声,用噪声的观测值来设计控制器的新方法,而且适当选取观测器反馈增益可以使观测误差充分的小,从而可得到几乎没有受到扰动时的控制效果。和常规滑模变结构控制方法相比,所设计的控制器既能有效地抑制抖振,又能降低控制器参数设计的保守性。最后,基于Matlab 6.5软件对Lorenz混沌系统进行分析和数值模拟,验证了该滑模控制方法在混沌同步中的优良性能。
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| 关 键 词： | 统一混沌系统 噪声扰动 同步 滑模控制 观测器 |
Synchronizing the noise-perturbed unified chaotic system by sliding mode control |
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| CHEN Xiu-qin,SHEN Zhi-ping,LI Wen-lin.Synchronizing the noise-perturbed unified chaotic system by sliding mode control[J].Electronics Optics & Control,2008,15(8). |
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| Authors: | CHEN Xiu-qin SHEN Zhi-ping LI Wen-lin |
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| Abstract: | The synchronization problem of noise-perturbed unified chaotic system is studied.Using the Sliding Mode Control(SMC) theory,a control law based on the observer estimation of the disturbance is derived.The feedback gain of the observer can be selected appropriately to make the observer error small enough,so the obtained result is nearly equivalent to that without disturbance.Compared with the general sliding mode controller,the controller designed here can inhibit chatting and decrease conservation of controller parameter design.Analysis and digital simulation are implemented based on Matlab 6.5 for Lorenz chaotic system,and the effectiveness of the proposed sliding mode control in chaotic synchronization is verified. |
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| Keywords: | unified chaotic system noise-perturbed synchronization control sliding mode control theory observer |
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