Fuzzy controller development from information granules for a heat exchanger

Abstract

This paper discusses the experimental results of on-line fuzzy control of a heat exchanger unit. Fuzzy controllers are a class of model independent controllers. which use common sense logic, expressible in linguistic form and is more amenable to human way of decision-making, A collection of information granules, regarding the process under study, is documented first. Using the some, the steps of formation and justification of the fuzzy look-up table is demonstrated. An efficient fuzzy control is established using multiple look-up tables. These tables are further adapted to accommodate conflicting control demands of 'low overshoot' and 'small rise time', An algorithm for on-line table switching is also proposed.