Single parametric fuzzy adaptive PID control and robustness analysis based on the queue size of network node

Due to its proruption characteristic, the available-bit-rate (ABR) traffic flow in asynchronous transfer mode (ATM) networks often causes network overload and network congestion. To provide solutions to the overload and congestion problems, a single parametric fuzzy adaptive PID control mechanism, which is based on the queue size at the network node, is proposed and analyzed. Simulation that runs on the OPNET software is carried out on the single node traffic model. The simulation results show that the mechanism proposed works well in terms of convergence speed of PED parameters, stability of the queue size, and system robustness.