CONTROL OF MOISTURE-CONTENT BY ADAPTIVE FUZZY CONTROL IN AGITATION FLUIDIZED-BED GRANULATION

This paper describes a novel moisture control system based on the adap tive fuzzy central in agitation fluidized bed granulation. To adjust t o the change in the inlet air conditions, a gain scheduling, in which the output gain was regulated depending on the drying capacity of the inlet air, was introduced to a fuzzy control system. Performance of th e system was evaluated by the moisture control during granulation at v arious inlet air temperatures. It was found that remarkable stability, which had been impossible to attain by conventional techniques, was a chieved. Based on the results obtained, it was confirmed that the deve loped system could adjust to the change in the process characteristics without updating the fuzzy rules.