Performance Management of Communication Networks for Computer Integrated Manufacturing

This paper focuses on a method to maintain an acceptable level of performance of the communication networks serving advanced manufacturing systems. This method is a part of performance management and aims to improve the network performance of handling various types of message such as e-mails, file transfers, control signals, and so on. In order to achieve the goal, the performance management adjusts protocol parameters such as timers and queue capacities, on line. The principles of fuzzy logic, genetic algorithms, and neural networks have been combined in formulating the performance management rules and for finetuning the manager. In orderto demonstrate the efficacy of this approach, a performance management procedure developed for the IEEE 802.4 protocol standard has been evaluated via discrete event simulation.