Optimal Modified Performance of MIMO Networked Control Systems With Packet Dropouts and Bandwidth Constraints

In this paper, the optimal modified performance problem of multiple-input multiple-output (MIMO) networked control systems (NCSs) with additional interference is investigated, the additional interference includes channel noise, encoding and decoding, quantization, packet dropouts, and bandwidth constraints. Most existing researches focus on the optimal modified performance of NCSs with communication constraints in a single channel or with a single communication constraint in a dual channel. Based on this, and combined with the actual constraints, this paper studies the optimal modified performance of NCSs with multiple communication constraints in a dual channel (forward and feedback channels). By using frequency domain analysis and various decomposition methods, the explicit expression for optimal modified performance under NCSs stability is obtained. The relationship between the optimal modified performance of the NCSs with the internal and external constraints of the NCSs can be observed by the explicit expression of the optimal modified performance. Finally, the accuracy of the obtained conclusions is verified through several sets of numerical simulations.