Banca de QUALIFICAÇÃO: MÁRCIO LINDEMBERG BEZERRA DE MEDEIROS
14/05/2020 16:55
Modeling and simulation applied to level control of oil and gas separators in production facilities is avery important tool because makes possible to perform tests that probably could not be viable due tooperation and safety constraints. Asides the level dynamics can be well understood regarding thephysical model, there will always be non-linearities to approach using a system identification procedure,requiring reasonable care on linear model identification. In order to assure a desired controlperformance, an adaptive control strategy has been proposed for level control for an oil and gas separatorusing the gain scheduling technique. Based on a first order process without time delay, the static gainand time period were determined for each point inside the operational space range of the equipment andby Internal Model Control (IMC), the tuning matrix found for a Proportional Integral (PI) controllerimplemented in a real commercial PID controller using polynomial interpolation methodology. Thehorizontal separator was simulated using MATLAB/SIMULINK® and data from a real separator vesselwere used to identify and validate the proposed process modeling in attempt to test an adaptive controlstrategy for practical applications.
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