For switched linear system with colored measurement noises,the identification difficulties of this system are that there exist unknown switching information,unknown middle variables and noise terms in the information ...For switched linear system with colored measurement noises,the identification difficulties of this system are that there exist unknown switching information,unknown middle variables and noise terms in the information vector.For the mentioned issues,the fuzzy clustering and the multi-innovation recursive identification algorithm are used to deal with these problems.Firstly,the mode detection is transformed into the detection of membership degree values confirmed by the fuzzy clustering method,and the problem of mode detection is solved by judgment and decision of the fuzzy membership values.Moreover,the multi-innovation recursive identification algorithm based on the generalized auxiliary model is proposed to estimate the parameters of the switched linear system with colored noises.Finally,the effectiveness of the proposed method is verified by the results of the simulation example.展开更多
Web QoS 是当前 Web 计算中的重要研究内容,用于解决 Web 计算环境中端到端 QoS 保证问题。本文提出一种支持 QoS 的 Web 服务器集群系统方案以及实现技术,整个系统由支持 QoS 的集群交换机和 Web 服务器集群两级结构组成,通过集群交换...Web QoS 是当前 Web 计算中的重要研究内容,用于解决 Web 计算环境中端到端 QoS 保证问题。本文提出一种支持 QoS 的 Web 服务器集群系统方案以及实现技术,整个系统由支持 QoS 的集群交换机和 Web 服务器集群两级结构组成,通过集群交换机和 Web 服务器的协同工作,实现优先转发与优先服务相结合的分布式 QoS 保证体系,充分满足 Web 用户的服务质量需求。通过系统测试,原型系统的性能指标达到了设计要求。展开更多
互联网的快速发展使得传统的POP组网方式面临巨大的挑战,部署SPR(Single POP Router)路由器被认为是解决问题的有效手段。提出了异构路由器的聚合交换技术,可以将POP中的多个异构路由器以集群的方式实现一个规模更大的SPR路由器,具有降...互联网的快速发展使得传统的POP组网方式面临巨大的挑战,部署SPR(Single POP Router)路由器被认为是解决问题的有效手段。提出了异构路由器的聚合交换技术,可以将POP中的多个异构路由器以集群的方式实现一个规模更大的SPR路由器,具有降低组网成本、保护现有投资、简化网络管理、提高交换效率等优点。给出了聚合交换技术中需要重点研究的几个关键问题以及研究思路。展开更多
基金supported by the National Natural Science Foundation of China(61863034)
文摘For switched linear system with colored measurement noises,the identification difficulties of this system are that there exist unknown switching information,unknown middle variables and noise terms in the information vector.For the mentioned issues,the fuzzy clustering and the multi-innovation recursive identification algorithm are used to deal with these problems.Firstly,the mode detection is transformed into the detection of membership degree values confirmed by the fuzzy clustering method,and the problem of mode detection is solved by judgment and decision of the fuzzy membership values.Moreover,the multi-innovation recursive identification algorithm based on the generalized auxiliary model is proposed to estimate the parameters of the switched linear system with colored noises.Finally,the effectiveness of the proposed method is verified by the results of the simulation example.
文摘Web QoS 是当前 Web 计算中的重要研究内容,用于解决 Web 计算环境中端到端 QoS 保证问题。本文提出一种支持 QoS 的 Web 服务器集群系统方案以及实现技术,整个系统由支持 QoS 的集群交换机和 Web 服务器集群两级结构组成,通过集群交换机和 Web 服务器的协同工作,实现优先转发与优先服务相结合的分布式 QoS 保证体系,充分满足 Web 用户的服务质量需求。通过系统测试,原型系统的性能指标达到了设计要求。
文摘互联网的快速发展使得传统的POP组网方式面临巨大的挑战,部署SPR(Single POP Router)路由器被认为是解决问题的有效手段。提出了异构路由器的聚合交换技术,可以将POP中的多个异构路由器以集群的方式实现一个规模更大的SPR路由器,具有降低组网成本、保护现有投资、简化网络管理、提高交换效率等优点。给出了聚合交换技术中需要重点研究的几个关键问题以及研究思路。
