Internal/Boundary Control-Based Fixed-Time Synchronization for Spatiotemporal Networks
本文研究具有Robin边界条件的时空网络的固定时间同步问题，提出了切换型固定时间稳定性定理和积分不等式，并设计了三种幂律控制器，分别作用于内部、边界和整个空间域，给出了同步时间上界的显式估计。
This article is concerned about fixed-time (FT) synchronization of spatiotemporal networks (STNs) with the Robin boundary condition. Above all, a switching-type FT stability theorem and an integral inequality are established, which provide a novel theoretical tool for the rigorous analysis of FT control in STNs. Subsequently, three kinds of nontrivial power-law controllers are developed which are separately acted on the interior, the boundary, and the whole of the spatial domain. Based on these control schemes and Lyapunov-like method, several flexible criteria are obtained to achieve FT synchronization of STNs, and the upper bound of the synchronization time is explicitly estimated. Note that, the derived results here are also perfectly applicable to STNs with Neumann or Dirichlet boundary condition. Several illustrate examples are presented at final to confirm the developed controllers and criteria.