Optimal Resource Allocation and Feasible Hexagonal Topology for Cyber-Physical Systems

Networked cyber-physical systems are facing serious security threats from malicious attacks.It is noted that the networked cyber-physical system should take defense measures into account at the beginning of its construction.From the conservative defensive perspective,this paper proposes a robust optimal defense resource allocation strategy to reduce the maximum possible losses of the networked cyber-physical system caused by potential attacks.Then,based on the robust optimal allocation strategy,it can be proved that the topology of the networked cyber-physical system has a great influence on the loss function.In order to further improve security,the effects of adding redundant connections are investigated.Furthermore,by taking geographical knowledge into account,a hexagonal construction scheme is proposed for providing a geographically-feasible and economically-viable solution for building networked cyber-physical systems,where the loss function has a cubic decay.