Aggregate State Control of Large-Scale Systems via Networked Controllers

The secure management of large-scale systems becomes more and more important in recent social infrastructures. In this study, we deal with an aggregate state control problem of a large-scale discrete-time system with networked controllers. First, we derive conditions on the parameters of the controller such that the aggregate state converges to zero with an assigned rate. Next, we design an optimal controller which minimizes components' dissatisfaction under the aggregate state condition. Moreover, we compare the obtained solution with the solution of the original optimization problem without the aggregate state condition, and clarify the effect of the network topology to the solution. Finally, the effectiveness of the proposed method is verified through a simulation. (C) 2017, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.