Communication and Control Co-design for Networked Control Systems under DoS Attacks and Time-varying Delays

This paper is concerned with the collaborative design of networked control systems (NCSs) subject to DoS attacks, scheduling protocols, and time-varying delays. First, to save limited network resources and prevent data collisions, the Try-Once-Discard (TOD) protocol is introduced to orchestrate the node access assignment in the sensor-to-controller channel. Then, denial-of-service (DoS) attacks that can cause communication blockages are addressed. Additionally, sufficient conditions are derived to guarantee the exponential mean-square stability of the resulting hybrid system based on which the controller gain and weighted matrix of scheduling protocols are co-designed. Finally, two simulation examples are used to illustrate the validity of the proposed method.