Time-invariant versus time-varying actuator scheduling in complex networks
Time-invariant versus time-varying actuator scheduling in complex networks
复制标题
复杂网络中的时不变与时变执行器调度
DOI：
10.23919/acc.2017.7963729
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
J. Cortés
中科院分区：
文献类型：
--
作者：
Erfan Nozari;F. Pasqualetti;J. Cortés
本文研究了随着时变的执行器计划对复杂网络的可控性的好处。网络动力学通过无向图上的单输入离散时间线性系统描述。以Gramian的可控性轨迹作为网络可控性的量度，我们确定了一个新的节点通信概念，并在随着时变的执行器调度问题中揭示了其作用。然后，我们继续确定网络结构的条件，以确定时间变化的执行器调度是否比时间不变的执行器选择更好。结果的主要结论是，具有多个和异质的中央节点（与单个高度中心节点相比）是网络中的共同因素，在这种网络中，随时间变化的执行器调度是有利的。
This paper studies the benefits of time-varying actuator scheduling to the controllability of complex networks. The network dynamics are described by a single-input discrete-time linear system over an undirected graph. Taking the trace of the controllability Gramian as the measure of network controllability, we identify a new notion of nodal communicability and unveil its role in the time-varying actuator scheduling problem. We then proceed to identify conditions on the network structure that determine whether time-varying actuator scheduling is better than time-invariant actuator selection. The main conclusion of our results is that having several and heterogeneous central nodes (versus having a single highly central node) is the common factor in networks where time-varying actuator scheduling is advantageous.