Control Structure Selection for the ALSTOM Gasifier Plant Considering Model Plant Mismatches

Agustriyanto, Rudy and Zhang, Jie (2009) Control Structure Selection for the ALSTOM Gasifier Plant Considering Model Plant Mismatches. Control Engineering of China, 16 (2). 168-172, 219. ISSN 1671-7848

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Relative disturbance gain array(RDGA)is a very useful tool for assessing the disturbance rejection capability of decentralised control structures.However, the values of RDGA are affected by model uncertainties.An optimization based method for determining RDGA ranges for systems with model uncertainties is presented.And the method is applied to the control structure selection for the ALSTOM Gasifier benchmark problem.Reduced order linear process and disturbance models of the gasifier are identified from simulated plant operating data using the output error system identification method.Several models are identified under different operating conditions and model uncertainty bounds are obtained from those models.The generalized relative disturbance gain ranges of the ALSTOM gasifier under model uncertainty are calculated and used in selecting robust decentralized control structure.

Item Type: Article
Uncontrolled Keywords: Alstom gasifier, relative disturbance gain array, plantwide control, process control, model plant mismatch
Subjects: T Technology > T Technology (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering > Department of Chemical Engineering
Depositing User: Rudy Agustriyanto, M.Sc 199005
Date Deposited: 31 Jul 2012 04:22
Last Modified: 01 Aug 2012 04:43

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