Simulation and Design of Controller for Production of Acetic Acid in a Bioreactor

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Asaadi, Shadi | 2018

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 50970 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Shahrokhi, Mohammad; Vafa, Ehsan
Abstract:
Due to advances of biotechnology, control of bioprocess has become very important. The goal of this project is to simulate the acetic acid production bioreactor and designing an adaptive PI controller for this reactor. For this goal, a suitable model has been selected from the literature and simulation has shown that the system has a nonlinear dynamical behavior. In order to control the system in a wide range of operating conditions, the adaptive PI controller was designed. In single input-single output case, the concentration of the product is controlled in such a way that the production rate is maximized, assuming that the pH and temperature are kept constant. Then a two input-two output controller is used that simultaneously controls the concentration of the product and the pH. In both cases, using by the Lyapunov function, the stability of the closed-loop system is shown. The simulation results indicate that the controller has a good performance
Keywords:
Bioreactor ; Lyapunov Function ; Proportional-Integral (PI)Controller ; Single Input-Single Output Controller ; Multiple Input-Multiple Output (MIMO)Controller

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