Consensus Problems of Second-Order Networks with Time-Delays

由于多自主体系统得到越来越广泛的应用，比如无人驾驶飞机，队列控制等，所以对这类系统的协调控制的研究是非常有意义的。在多自主体系统的协调控制中，最关键的是如何设计出比较合理的协议或算法。根据这个协议或算法，使得网络中各个自主体随着时间的演化都能达到同一状态，即实现一致。这个状态在物理上可以代表着位置，速度，温度等。 一致性思想的研究已有了很长的历史。在信息科学领域里，特别是自动理论和分布计算领域里已经得到了应用。通过分析比较现有的文献发现，根据应用领域的不同，一致性协议主要分为三大类：量子化的一致性协议，离散时间的一致性协议和连续时间的一致性协议。关于量子化的一致性协议，主要应用于负载平衡方面...The multi-agent systems have received much attention recently because of their wide application, such as unmanned aerial vehicles, queue control, etc. For a multi-agent coordination and control system, the most important thing is to design a reasonable protocol or algorithm under which the agents will reach the same state with the evolution of the time i.e., the network can achieve consensus. In p...学位：工学硕士院系专业：信息科学与技术学院自动化系_控制理论与控制工程学号：2322006115252

Consensus Algorithm of the Second-order Network with Multiple Time-varying Delays

研究了二阶动态无向网络的一致性问题,其采用的协议既考虑了时滞,又考虑了网络拓扑结构发生切换的影响.通过分析发现,当网络受到多个时变时滞或者同时受到网络拓扑结构发生切换的影响时,在一定条件下,该无向网络能实现一致.另外在频率域里,还求出了任意两个不同自主体之间通信所允许的一个共同时滞上界.这个上界是依赖于网络参数的,因此具有更低的保守性.This paper discusses the second-order consensus algorithm for the network with multiple time-varying delays.The studied protocol is affected not only by the time delays but also by the switching topologies of a network.The study shows that the network can achieve consensus if certain conditions are satisfied.The conditions are inferred by introducing a special Lyapunove function.Furthermore,we attain a common upper bound time-delays by discussing the problem in frequency domain.This implies that the network can achieve consensus,when the time delays generated by agent communication are lower than the upper bound time-delay.Moreover,the common upper bound time-delay is dependent on the parameters of the network which can reduce its conservatism.Finally,we also discuss the case of the switching topologies.In this case,the network can also achieve consensus.福建省自然科学基金(A0510002);厦门大学“985工程”二期信息创新平台项目资

CAMAC系统在时间飞行质谱测量中的应用

利用ＣＡＭＡＣ系统和微机建立的高速数据采集及传输系统，可以广泛应用于快速时间分辨的微弱信号检测，本文介绍了该系统硬件及软件设计，并给出了利用它测量激光溅射铁氰化钾产生团簇离子的飞行时间质谱（ＴＯＦ－ＭＳ）的实验结果

Identification of Prorocentrum donghaiense in Genus Prorocentrum from the East China Sea Based on Partial LSU rDNA

采用PCR扩增技术对分类上有争议的中国东海赤潮原因种(被称为东海原甲藻,本文简称:东海株系)的基因组DNA进行了核糖体DNA大亚基片断(LSUrDNA)的扩增和测序,并与一同扩增的来自美国CCMP的被称为具齿原甲藻(本文简称:CCMP株系)的同源序列进行分析比较.结果表明,两者710bp的LSUrDNA同源序列中仅存在7个碱基的差异,遗传相似度高达99. 01%,遗传差异为0. 99%.进一步与Genebank其他3种原甲藻即P.mexicanum、P.micans和P.minimum的同源序列进行比较,发现其他3种原甲藻两两间的种间遗传相似度在91. 1% ~95. 5%之间,而P.micans和P.minimum种内不同株系的遗传相似度为99. 4% ~99. 9%,均为99%以上.综合这些数据说明东海株系与CCMP株系之间的0. 99%的遗传差异应视为种内差异,原甲藻的东海株系与CCMP株系当属异名同种.因此本试验结果从分子水平支持了被称为东海原甲藻的原甲藻与被称为具齿原甲藻(P.dentatum)的原甲藻同为一种的观点. 【英文摘要】 The redtide causative organism Prorocentrum donghaiense from the East China Sea (Donghai strain) and P.dentatum from Culture Center of Marine Phytoplankton(CCMP) were analyzed by amplifying and sequencing the part of region of the large-subunit ribosomal DNA gene(LSU rDNA).The results showed that of 710 base pairs(bp) within LSU rDNA,only 5 bps were different between them.Both strains showed 99.01% genetic homology and 0.99% genetic differences.At the same time,the homologous sequences of another three spec...国家重点基础研究发展规划项目(2001CB409701);; 中国科学院海洋研究所海洋生态与环境科学重点实验室开放课