A Fuzzy Cognitive Network Based Control Scheme for An Anaerobic Digestion Process

Fuzzy cognitive networks (FCN) are extensions of the well known fuzzy cognitive maps (FCM) so that they operate in direct interconnection with the system they describe. This paper explores the ability of FCNs to control an anaerobic digestion process of a wastewater treatment plant. The design of the appropriate FCN to simulate the operation of the process is proposed first. Then, a control scheme for the process is proposed, which is based on the operational ability of the FCN to interact with the process. The ability of the FCN to control the process is simulated by using data from an experimental anaerobic digestion unit