协同控制下的空间信息网络简单虚拟局域网构想

发布时间：2018-04-05 06:06

本文选题：虚拟局域网　切入点：空间信息网　出处：《中国空间科学技术》2017年01期

【摘要】：针对空间信息网的组网实现问题,考虑卫星通信网络的长时延、动态性、资源受限等网络特性,提出了一种协同控制下的虚拟局域网组网构想:首先,通过将空间信息网络划分成多个虚拟局域网的方法分割空间广域网,减轻星载计算机的信息处理负担和带宽资源的无谓损耗。其次,基于一致性算法,在协同控制律中加入路由算法实现虚拟局域网内节点卫星信息的两两联通,提高空间信息网络的可靠性和协同处理性能,将这种时变时滞协同控制律应用在空间信息网结构中能够实现空间强连通组网,应用于单个卫星上则可以实现关键节点卫星的冗余备份和负载均衡。最后,模拟仿真空间信息网框架结构和冗余节点虚拟局域网,在50s内迅速实现预定轨迹收敛,且收敛后具有较为稳定的星间时延,从而验证了方案的可行性。
[Abstract]:Considering the long delay, dynamic and limited resource of satellite communication network, this paper puts forward a virtual LAN networking concept based on cooperative control.By dividing the spatial information network into several virtual local area networks, the space wide area network (WAN) is divided to reduce the information processing burden and the unnecessary loss of bandwidth resources of spaceborne computers.Secondly, based on the consistency algorithm, the routing algorithm is added to the cooperative control law to realize the interconnection of satellite information between nodes in the virtual local area network, so as to improve the reliability and cooperative processing performance of the spatial information network.When the time-varying time-delay cooperative control law is applied to the spatial information network structure, the strongly connected spatial network can be realized, and the redundant backup and load balancing of the key node satellite can be realized when applied to a single satellite.Finally, the simulation spatial information network framework and redundant node virtual local area network (VLAN) can rapidly realize the predetermined trajectory convergence in 50s, and the convergence has relatively stable intersatellite delay, which verifies the feasibility of the scheme.
【作者单位】：北京航空航天大学宇航学院;
【分类号】：TN927.2

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