Advanced control of a fluidized bed using a model-predictive controller

Ibrehem, A.S.; Hussain, M.A.; Ghasem, N.M. (2009) Advanced control of a fluidized bed using a model-predictive controller. Australian Journal of Basic and Applied Sciences, 3 (4). pp. 3954-3974. ISSN 19918178

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    The control of fluidized-bed processes remains an area of intensive research due to their complexity and the inherent nonlinearity and varying operational dynamics involved. There are a variety of problems in chemical engineering that can be formulated as Nonlinear Programming (NLP) problems. The quality of the solution developed significantly affects the performance of such a system. Controller design involves tuning of the process controllers and their implementation to achieve a specified performance of the controlled variables. Here we used a Sequential Quadratic Programming (SQP) method to tackle the constrained high-NLP problem, in this case a modified mathematical model of gas-phase olefin polymerisation in a fluidized-bed catalytic reactor. The objective of this work was to present a comparative study; PID control was compared to an advanced neural network-based MPC decentralised controller, and the effect of SQP on the performance of the controlled variables was studied. The two control approaches were evaluated for set-point tracking and load rejection properties, both giving acceptable results.

    Item Type: Article
    1. Ibrehem, A.S.
    2. Hussain, M.A.(Department of Chemical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia)
    3. Ghasem, N.M.
    Journal or Publication Title: Australian Journal of Basic and Applied Sciences
    Additional Information: Export Date: 5 March 2013 Source: Scopus Language of Original Document: English Correspondence Address: Ibrehem, A. 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    Uncontrolled Keywords: Model predictive control; Neural networks; Optimisation; Proportion integral derivative control.
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    T Technology > TP Chemical technology
    Divisions: Faculty of Engineering
    Depositing User: Mr Jenal S
    Date Deposited: 10 Jul 2013 11:20
    Last Modified: 26 Dec 2014 09:04

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