A less‐conservative stability criterion for networked control systems with time‐varying packet delays

A networked output feedback loop subject to packetized transmissions of the signal is considered. Based on small gain theorem, an easy-to-use stability criterion covering two important cases presented. In first case a packet numbering mechanism employed whereas in second neither nor synchronization between sender and receiver assumed. The analysis makes use acausal subsystems deduces optimal constant time delay with respect minimization ℓ2 due uncertain delays. This additional then used nominal controller design such that admissible variations introduced by network are maximized. simulation example control system filtered Smith predictor illustrates application proposed criterion. It shown novel technique less-conservative than existing criteria based theorem.