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基于TCP动态网络系统模型的鲁棒H_∞控制 被引量：1

Robust H_∞ control based on TCP dynamic network system model
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摘要 为了降低已有系统模型对回路时间的依赖,得出TCP网络系统的延时上界,通过引入变延时,利用线性矩阵不等式(LMI)设计了鲁棒H∞状态反馈控制器.采用Lyapunov函数方法验证了网络系统的稳定性,系统能够满足指定的H∞性能指标,并且减少延时和干扰对网络系统性能的影响;利用矩阵变换方法,将研究结果转化为具有线性矩阵不等式约束的凸优化形式,以便控制器的求解.通过算例仿真表明了所设计方法的有效性和可行性. In order to reduce the dependence of the existing system model on round-trip time （RTT） and obtain the maximum delay of TCP network system,the robust H∞ status feedback controller was designed by introducing the variable delay and utilizing linear matrix inequality （LMI）. The stability of the network system was verified by Lyapunov function. The system can reach the appointed H∞ performance index,and the effect of both delay and disturbance on the performances of the network system gets reduced. The research result was transformed into the convex optimization form with the LMI constrain in order to solve conveniently. The simulation result proves the effectiveness and feasibility of the designed method.
作者 孙平 曾繁华 李树江
机构地区 沈阳工业大学信息科学与工程学院
出处 《沈阳工业大学学报》 EI CAS 2010年第1期105-109,共5页 Journal of Shenyang University of Technology
基金 国家自然科学基金资助项目(60772055) 辽宁省博士启动基金资助项目(20081025)
关键词 TCP网络系统 鲁棒控制 延时 LYAPUNOV函数 线性矩阵不等式 链路容量 回路时间 H∞性能指标 TCP network system Robust control delay Lyapunov function LMI link capacity round trip time H∞ performance index
分类号 TP273 [自动化与计算机技术—检测技术与自动化装置]
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参考文献13

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共引文献22

同被引文献10

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沈阳工业大学学报
2010年 第1期

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