几类具有区间时变时滞的离散系统的稳定性分析与控制设计-梁爽.docx
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1、独创性声明 本人声明所呈交的学位论文是本人在导师指导下进行的研究工作和取得的研 宂成果,除了文中特别加以标注和致谢之处外,论文中不包含其他人已经发表或撰 写过的研究成果,也不包含为获得 天津工业大学 或其他教育机构的学位或证书而 使用过的材料 .与我一同工作的同志对本研宄所做的任何贡献均已在论文中作了 明确的说明并表示了谢意 . 学 位 论 文 作 者 签 名 : 签 字 日 期 : 1“)年之月口 学位论文版权使用授权书 本学位论文作者完令了解 天津工业大学 有关保留、使用学位论文的规定 特 授权天津工业大学 可以将学位论文的全部或部分内容编入有关数据库进行检索, 并采用影印、缩印或扫描等复
2、制手段保存汇编以供查阅和借阅 .同意学校向国家 有关部门或机构送交论文的复印件和磁盘 . (保密的学位论文在解密后适用本授权说明) 学位论文作者签名 : H 导师签名: 签 字 曰 期 : 叫 7年 2 月 3曰 签 字 曰 期 : 叫 7年 Z月 日 一、 研宄一类带有区间时变时滞和非线性干扰的木确定离散时间随 机系统的鲁棒稳定性和镇定问题 .首先 ,通过构造新的 Lyapiuiov-Krasovskii 泛函和应用重要的不等式,本文建立了一类带有区间时变时滞的不确定 离散时间随机系统鲁棒稳定的新的时滞依赖充分条件 .其次,基于状态 反馈控制器,文中建立了一类带有区间时变时滞的不确定离散时间
3、随机 系统鲁棒随机镇定的新判据 ,并提供了保证闭环系统鲁棒随机稳定的控 制增益矩阵的新设计方法 .最后,文中通过仿真例来说明所得结果的有 效性 . 二、 研宄一类带有区间时变时滞的不确定离散时间随机神经网络系 统的全局指数稳定和镇定问题 .首先,通过使用线性矩阵不等式方法和 自由权技术,并结合构造新的 Lyapunov-Krasovskii 泛函,本文建立了带有 区间时变时滞的不确定离散时间随机神经网络系统在均方意义下全局 兽棒指数稳定的新的时滞依赖充分条件 .其次,基于状态反馈控制器,文 中提出了带有区间时变时滞的不确定离散时间神经网络系统全局鲁棒 指数镇定的新判据,并提供了保证了闭环系统兽
4、棒指数稳定的控制增益 矩阵的新的设计方法 .最后,文中通过仿真例来说明所得结果的有效性 . 三、 研究了带有区间时变时滞和非线性干扰的一类不确定离散时间 切换系统的稳足性和 /控制纟系合问题 .通过构造新的 Lyapunov- K r asovskii 泛函,并应用矩阵不等式方法和自由权矩阵技术,本文建立了一类离散 时间切换系统渐近稳定的新的时滞依赖充分条件 .然后研宄了一类带有 区间时变时滞和非线性干扰的不确定离散时间切换控制系统的 镇定; Lyapunov泛函;控制增益;线性矩阵不等式;切换系统;控制; ABSTRACT The problems of stability analysis
5、 and control design for discrete-time systems with internal time-varying delay are important research subjects in the field of discrete-time systems. In the dissertation, the stability analysis and controller design problem for several classes of nonlinear systems with time-varying delay are investi
6、gated. The main contributions of this dissertation are given as follows: Firstly, this paper considers the problem of the robust stability and stabi- lization for a class of uncertain discrete-time stochastic systems with interval time-varying delays and nonlinear disturbances. By constructing an ap
7、propriate Lyapunov-Krasovskii functional, and using linear matrix inequalities method, we establish some new delay-dependent robustly stochastic stability criteria for a class of uncertain discrete-time stochastic systems with interval time-varying delays. Robust feedback stabilization methods are p
8、rovided based on state feedback control. The new sufficient conditions for a class of uncertain discrete-time stochsistic control systems ith interval time-varying delays are established, under which the closed-loop system is robustly stochastically stable. The calculation method of the control gain
9、 is given. Numerical simulation examples are used to demonstrate the effectiveness and applicability of the obtained results. By introducing some parameters 61,62,1 and p2 our method leads to less conservatism compared with the existing ones. Secondly, this paper deals with the problem of the global
10、 exponential stability and for a class of uncertain discrete-time stochastic neural networks with interval time-varying delays. In the neural network model, the parameter uncertainties are norm-bounded. By using the linear matrix inequality method and the free-weighting matrix technique and construc
11、ting a new Lyapunov-Krasovskii functional, we establish new sufficient conditions to guarantee that the uncertain discrete-time stochastic neural networks with interval time-varying delay are globally exponential stable in the mean square. Then, based on the state feedback control law, some novel de
12、lay-dependent criteria of the robust exponential stabilization for a class of discrete-time stochastic neural networks with interval time-varying delay are established. The controller gains are designed to ensure the global robust exponential stability of the closed-loop systems. Finally, numerical
13、simulation examples illustrate the effectiveness of the theoretical results we have obtained. Finally, this paper investigate the problems of the stability analysis and H controller synthesis for discrete-time switched systems with interval time-varying delay and nonlinear disturbances. By construct
14、ing an appropriate Lyapunov- Krasovskii functional and using the linear matrix inequality method and the free-weighting matrix technique, the new delay-dependent robustly asymptotically stable criteria axe established to guarantee that a class of uncertain discrete-time switched systems with interva
15、l time-varying delays is asymptotically stable. Furthermore, using the linear matrix inequality method and the free-weighting matrix technique, new sufficient conditions are proposed, which guarantee that discretetime switched systems with interval time-varying delay and nonlinear disturbances are a
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- 具有 区间 时变时滞 离散系统 稳定性 分析 控制 设计
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