Network-based process control and improvements with fuzzy time delay modulator

One of the major drawbacks behind using data networks is their induced network delay effect in the control loop. This effect not only degrades the performance, but can also destabilize the controlled process. This paper proposes a fuzzy logic based control modulation technique for network based process control. The technique is based on modulating the control signal provided to the network based controlled process under the objective of overcoming network delays besides maintaining the stability and controlling the performance as much as possible. The proposed technique, which can be used with any type of process controller, is illustrated via application on a Jacketed Reactor Control process.