Structural controllability of networked systems with general heterogeneous subsystems
Jianbin Mu, Jing Bo Wu, Ning Li, Xiaohu Zhang, Shaoyuan Li · Asian Journal of Control · 2021
Abstract In this note, we investigate structural controllability of networked systems in which subsystems have high‐order and heterogeneous dynamics and are coupled through relative state variables. It is aimed to search conditions for subsystem dynamics, under which structural controllability of the whole network essentially depends only on network topology as well as subsystem interconnection links. Necessary and/or sufficient conditions for structural controllability are given by simplifying subsystem dynamics. As an application, these criteria are utilized to design network topology that minimizes the number of subsystem interconnection links under the requirement of structural controllability without concerning subsystem dynamics, which is also much more efficient computationally than a direct design for the global system. The effectiveness of the criteria is demonstrated through several examples.