Event-triggered control based on observer for active queue management

With the increase of network scale and the continuous growth of network users and applications, the network congestion has become an important problem. In this paper, an observer-based AQM algorithm is proposed because the system state is not fully measurable. Considering the uncertainty and external disturbance of network, the robust event-triggering controller and event-triggering condition based on observer are designed and two methods to calculate the gain of the designed controller are given. The simulation results show that the algorithm is strongly robust and it can reduce the calculating frequency of controller.