Document Type
Thesis
Date of Award
6-30-1970
Degree Name
Master of Science in Chemical Engineering - (M.S.)
Department
Chemical Engineering and Chemistry
First Advisor
Deran Hanesian
Second Advisor
Ching-Rong Huang
Third Advisor
Angelo J. Perna
Abstract
Feedforward control, feedback control, and combined feedforward-feedback control were studied on an analog computer to evaluate their effectiveness in controlling a fluidized-bed reactor used for the decomposition of cumene. Proportional, proportional-integral, proportional-derivative, and proportional-integral-derivative modes of control were investigated. Step changes in set-point and load were used as disturbances. The Ziegler-Nichols method and the process reaction curve method of Cohen and Coon were compared in determining values of KC, Ti, and Td which gave optimum control of the fluidized-bed reactor.
Control equation were obtained from the block diagrams of the systems and solved on an EAI TR-20 Analog Computer.
It was found that tighter control of the fluidized-bed reactor was maintained when feedforward control was combined with feedback control for all modes of control studied. The Cohen and Coon reaction curve method and the Ziegler-Nichols method resulted in values of Kc, Ti, and Td which gave equally good control.
Recommended Citation
Mitchell, Reginald Eugene, "Combined feedforward-feedback control of a fluidized-bed reactor" (1970). Theses. 2421.
https://digitalcommons.njit.edu/theses/2421
