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The problem of reliable robust H∞ tracking control for a class of uncertain Lur'e singular systems is studied.

摘要针对一类不确定Lur'e奇异奇异系统，研究了其可靠鲁棒跟踪控制问题。

With the help of L〓 gain constraint condition in the H〓 control theory, the thesis studies the robustness analysis of optimal control in chaotic Lur'e systems.

本文还利用H〓控制理论中的L〓增益约束条件对Lur'e混沌系统最优控制进行了鲁棒性分析。

This paper studies chaos synchronization problem based on the general Lur'e systems by using a time-delay feedback technique.and the findings have improved some research results in recent literatures.

本文采用时滞反馈控制技术研究了一般 Lur'e系统的混沌同步问题，改进了最近有关文献的结果。

A numerical example is presented which shows that the proposed method can substantially improve the delay bound for absolute stability of Lur′e system with time-delays, compared to the existing ones.

数值例子表明，与现有结果相比，本文结果较大地改进了保证不确定时滞Lur′e型控制系统绝对稳定的时滞界。

In the fifth part, the H〓 control problem for Lur'e systems with multiple nonlinearities is discussed. The existence is reduced to solvability of multiple linear matrix inequalities. And the design method is simple and feasible via iterative optimal algorithm based on the interior-point method of LMI.

第五部分：研究了具有多个非线性环节的Lur'e系统的H〓控制问题，给出了基于双线性代数矩阵不等式的可解条件，此结果可覆盖关于线性系统相应问题的结论，同时又避免了目前在非线性系统H〓控制的研究中出现的偏微分矩阵不等式难以求解的问题。

With Lur'e method,the refined theory of the beam on the elastic foundation is aquired from the Winkler Foundation boundary conditions.

再利用winkler弹性地基条件和Lur'e算子方法，获得弹性地基上梁的控制方程。

Simultaneously, it also shows the frequency domain criteria are suitable for chaotic complete synchronization of the master-slave Lur'e systems concerning master's control signals without propagation delay.

从所得到的三个频率域判据我们发现，只要满足这些判据，主—从Lur'e系统混沌滞后同步时的滞后时间取决并等于主系统控制信号的传输延迟时间。

Hence the propagation delay time of master's control signals don't need to be pre-known in the control process of synchronization, and also these criteria are applicable to chaotic complete synchronization of the master-slave Lur'e systems concerning master's control signals without propagation delay.

我们证明了关于该混沌同步问题达到滞后同步或不能达到滞后同步的四个Lur'e型判据和七个频率域判据，给出了优化选择主系统驱动变量的模型。

The major contributions of this thesis include:(1) proposing a new kind of optimal feedback control, followed by its application to chaos targeting and stabilization of high period unstable periodic orbits ;(2) stabilization of unstable fixed point in chaotic systems using some kind of nonlinear feedback control, and giving sufficient condition for the existence of the controller as well as the synthesis procedure;(3) analyzing the robustness of optimal control in chaotic Lur'e systems under the help of H〓 control theory;(4) finally and most importantly, introducing a novel method of information storage based on discrete time chaotic systems as the application of chaos control, and systematically studying different schemata for implementation, providing a theoretic basis for the design of such new kind of information storage devices with large capacity.

本文的主要工作包括，提出一种新的最优反馈控制，并将之应用于混沌引导控制及混沌系统高周期不稳定周期轨道的镇定控制；针对不动点镇定控制的一类非线性反馈控制器，文中给出该类反馈控制存在的充分条件及设计步骤；文中还利用非线性H〓鲁棒控制理论对Lur'e混沌系统中的最优线性反馈控制进行鲁棒性分析；最后，也是最重要的，作为混沌控制的应用，文中提出一种基于离散时间混沌系统的信息存储方法，系统地分析、研究了实现这种信息存储的不同方案，为以后进行这种新型大容量存储器设计提供了一定的理论依据。

Has a remarkably wide range, though it is difficult to achieve (the high b makes the first string very taut such that it will break easily), and may not play well on an acoustic guitar (the low C is too low to resonate properly in a standard guitar's body). Luthier Todd Keehn claims to have been the first guitarist to adopt an all-fifths tuning, his being arranged G-D-a-e-b'-f#', and he has made an all fifths tuned guitar that can be seen at his website, http://tkinstruments.com/.

这个调弦的音域相当地宽，但是也很难达到要求（高音B使第一弦崩得非常紧，容易断）这个调弦在原声吉他上的效果也不理想（低音C太低在普通的箱琴上无法产生共鸣）据说Luthier Todd Keehn是第一个用这种调弦的吉他手，他还用 G-D-a-e-b'-f#调弦，他的全五调弦的琴可以在他的网站上看到 http：//tkinstruments.com/。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。