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MIQP-BASED MPC IN THE PRESENCE OF CONTROL VALVE STICTION

H., Zabiri and Y., Samyudia (2008) MIQP-BASED MPC IN THE PRESENCE OF CONTROL VALVE STICTION. In: Chemeca 2008: Towards a Sustainable Australasia., 28th September through 1st October 2008, Newcastle, N. S. W., Australia.

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Abstract

Stiction in control valve is the most common and long standing problem in process industry, resulting in oscillations in process variables which subsequently lower product quality and productivity. In this paper, we investigate the effect of avoiding the deadband region of stiction using Mixed-Integer Quadratic Programming (MIQP) based Model Predictive Controller (MPC). Different scenarios of control valve stiction are considered. Simulation studies using an industrial case study of fluid catalytic cracking unit (FCCU) show that, if the dead-band value is known a-priori, the MIQP-based MPC can effectively improve the closed-loop performance in the presence of stiction through the reduction of oscillations in the process variables.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords: Valves -- Testing; Automatic control -- Mathematical models; Catalytic cracking; Predictive control -- Mathematics
Subjects:T Technology > TP Chemical technology
Departments / MOR / COE:Departments > Chemical Engineering
ID Code:3701
Deposited By: Haslinda Zabiri
Deposited On:28 Dec 2010 06:49
Last Modified:19 Jan 2017 08:26

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