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Synchronization criteria based on a general complex dynamical network model
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作者 章剑林 王昌建 《Journal of Chongqing University》 CAS 2008年第3期221-227,共7页
Many complex dynamical networks display synchronization phenomena. We introduce a general complex dynamical network model. The model is equivalent to a simple vector model of adopting the Kronecker product. Some synch... Many complex dynamical networks display synchronization phenomena. We introduce a general complex dynamical network model. The model is equivalent to a simple vector model of adopting the Kronecker product. Some synchronization criteria,including time-variant networks and time-varying networks,are deduced based on Lyapunov's stability theory,and they are proven on the condition of obtaining a certain synchronous solution of an isolated cell. In particular,the inner-coupling matrix directly determines the synchronization of the time-invariant network; while for a time-varying periodic dynamical network,the asymptotic stability of a synchronous solution is determined by a constant matrix which is related to the fundamental solution matrices of the linearization system. Finally,illustrative examples are given to validate the results. 展开更多
关键词 SYNCHRONIZATION complex network stable matrix
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基于共旋三角形厚薄通用壳元的几何非线性分析 被引量:6
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作者 王振 孙秦 《工程力学》 EI CSCD 北大核心 2014年第5期27-33,共7页
基于共旋列式方法发展了一种用于复合材料层合板结构几何非线性分析的简单高效的三结点三角形平板壳元。该壳元由具有面内转动自由度的广义协调膜元GT9与假设剪切应变场和假设单元转角场的广义协调厚薄通用板元TMT组合而成。为避免薄膜... 基于共旋列式方法发展了一种用于复合材料层合板结构几何非线性分析的简单高效的三结点三角形平板壳元。该壳元由具有面内转动自由度的广义协调膜元GT9与假设剪切应变场和假设单元转角场的广义协调厚薄通用板元TMT组合而成。为避免薄膜闭锁而采用单点积分计算与薄膜应变有关的项,同时增加一个稳定化矩阵以消除单点积分导致的零能模式。基于层合板一阶剪切变形理论,给出了考虑层合板具体铺层顺序的修正的横向剪切刚度,使该壳元可用于中厚层合板结构的分析。由于共旋列式大转动小应变的假设,共旋列式内核的几何线性的单元刚阵可仅计算一次而保存下来用于整个几何非线性求解的过程以提高计算效率。数值算例表明提出的壳元进行包括复合材料层合板结构的厚薄壳结构的几何非线性分析的精度高且效率高。 展开更多
关键词 几何非线性 共旋 层合板复合材料 广义协调 厚薄通用 减缩积分 稳定化矩阵 一阶剪切理论
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STABILIZATION OF THE QUADRUPLE INVERTED PENDULUM BY VARIABLE UNIVERSE ADAPTIVE FUZZY CONTROLLER BASED ON VARIABLE GAIN H_∞ REGULATOR 被引量:1
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作者 Yongli ZHANG Jiayin WANG Hongxing LI 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2012年第5期856-872,共17页
In this paper, the variable universe adaptive fuzzy controller based on variable gain Ha regulator (VGH∞R) is designed to stabilize a quadruple inverted pendulum. The VGH∞R is a novel robust gain-scheduling approa... In this paper, the variable universe adaptive fuzzy controller based on variable gain Ha regulator (VGH∞R) is designed to stabilize a quadruple inverted pendulum. The VGH∞R is a novel robust gain-scheduling approach. By utilizing VGH∞R technique, a more precise real-time feedback gain matrix, which is changing with states, is obtained, Via the variable gain matrix 10 state variables of quadruple inverted pendulum are transformed into a kind of synthesis error (E) and synthesis rate of change of error (EC) at sampling time. Therefore, the dimension of the multivariable system is reduced and the variable universe adaptive fuzzy controller is built. Experiments illustrate the effectiveness of the proposed control scheme. 展开更多
关键词 Quadruple inverted pendulum variable gain H∞ regulator (VGH∞R) variable universeadaptive fuzzy controller (VUAFC) algebraic Riccati equation (ARE).
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