多个体协调控制问题综述

对多个体协调控制问题的研究现状进行综述. 介绍了多个体协调控制领域的基本问题, 并结合系统中网络与动力学不确定性, 对该领域当前的研究热点和前沿进行分析阐述. 进一步, 对工程中广为应用的Euler-Lagrange系统协调控制最新研究成果进行归纳总结. 最后指出该研究领域存在的问题及今后的研究方向.  

多弹分布式协同末制导时间一致性研究

针对多弹同时击中目标的任务,利用图论与一致性理论分析研究了网络拓扑跳变时的分布式协同制导问题.建立了节点状态连续而拓扑状态离散的混杂系统模型,以描述期望导引时间的动态特性;进而指出,当跳变网络结构满足一定条件时,加权平均一致算法能使导弹群期颦导引时间全局渐近收敛于各弹期望导引时间的加权平均,并得到收敛速度下限.针对具有3种跳变通信结构的三弹协同攻击的仿真结果,显示了协同末制导时间一致性策略的有效性.  

Average consensus in networks of dynamic agents with switching topologies and multiple time-varying delays

In this paper, we discuss average consensus problem in undirected networks of dynamic agents with fixed and switching topologies as well as multiple time-varying communication delays. By employing a linear matrix inequality method, we prove that all the nodes in the network achieve average consensus asymptotically for appropriate communication delays if the network topology is connected. Particularly, several feasible linear matrix inequalities are established to determine the maximal allowable upper bound of time-varying communication delays. Numerical examples are given to demonstrate the effectiveness and the sharpness of the theoretical results.  

Consentability and protocol design of multi-agent systems with stochastic switching topology

This paper studies the mean square consentability problem for a network of double-integrator agents with stochastic switching topology. It is proved that in Markov-switching topologies, the network is mean square consentable under linear consensus protocol if and only if the union of graphs in the switching topology set has globally reachable nodes. A necessary and sufficient condition of the mean square consensus is obtained. Finally, an LMI approach to the design of the consensus protocol is presented. Numerical simulations are given to illustrate the results.  

Consensus protocols for discrete-time multi-agent systems with time-varying delays

This paper addresses consensus problems for discrete-time multi-agent systems with time-varying delays and switching interaction topologies and provides a class of effective consensus protocols that are built on repeatedly using the same state information at two time-steps. We show that those protocols can solve consensus problems under milder conditions than the popular consensus algorithm proposed by Jadbabaie et al., specifically, the presented protocols allow for the case that agents can only use delayed information of themselves, whereas the popular one is invalid. It is proved that if the union of the interaction topologies across the time interval with some given length always has a spanning tree, then in the presence of bounded time-varying delays, those protocols solve consensus problems.  

自动测试平台开关系统设计研究

开关系统是整个自动测试平台的中心,能够将各类信号自动切换到被测对象的输入端口和相应的测试仪器;通过设计开关系统可以实现测试平台不同程度的自动化,缩短测试时间,减少人为错误;介绍了开关系统设计中的拓扑技术,分析了各型继电器的特性以及继电器的选型原理;以G6HK-2型继电器为所选型号,研究设计了一种配置灵活、性能稳定、易于控制的开关系统.  

基于近似模拟的多智能体系统分布式层次控制设计

本文主要探讨基于近似模拟的多智能体系统分布式层次控制的设计问题。为降低问题复杂度,首先建立了一个简单的抽象系统指导各智能体,继而讨论这一抽象系统和多智能体之间的模拟关系。借助于该抽象系统,给出多智能体系统完成一类协调任务的分布式层次控制器。同时利用模拟函数和共同Lyapunov函数,进一步分析了多个体系统在切换拓扑下的集体行为。  

Distributed robust consensus control in directed networks of agents with time-delay

This paper investigates consensus problems for directed networks of agents with external disturbances and model uncertainty on fixed and switching topologies. Both networks with and without time-delay are taken into consideration. In doing the analysis, we first perform a model transformation and turn the original system into a reduced-order system. Based on this reduced-order system, we then present conditions under which all agents reach consensus with the desired H_∞ performance. Finally, simulation results are provided to demonstrate the effectiveness of our theoretical results.  

Stationary consensus of heterogeneous multi-agent systems with bounded communication delays

Consensus seeking is investigated for the discrete-time heterogeneous multi-agent systems composed of first-order agents and second-order agents, and two stationary consensus algorithms are constructed for the first-order agents and the second-order agents, respectively. Based on the properties of nonnegative matrices, sufficient consensus criteria are obtained for the agents with bounded communication delays under fixed topology and switching topologies, respectively. With some prerequisites on the coupling weights and the sampling interval, the asymptotic consensus achievement of the dynamic agents is independent of the communication delay, but strictly depends on the connectedness of the interconnection topology. Simulation results illustrate the correctness of the results.  

受损多智能体系统的信息一致性

针对受损多智能体系统的信息一致性问题, 基于代数图论提出了联合r连通概念, 给出了当系统中的部分成员受损或离开后不能继续原有工作时, 其余成员仍可实现一致性的充要条件. 研究结果表明, 在此条件下系统可失去成员的数量取决于系统的通信能力. 仿真实例验证了理论分析结果的正确性和有效性.