Development of Linearizing Feedback Control with a Variable Structure Observer for Continuous Stirred Tank Reactors

This paper deals with the design of an observer-based nonlinear control for continuous stirred tank reactors （CSTR）. A variable structure observer is constructed to estimate the whole process state variables. This observer is basically the conventional Luenberger observer with an additional switchin...

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Bibliographic Details
Published in:Chinese journal of chemical engineering 2012-06, Vol.20 (3), p.567-571
Main Authors: Daaou, Bachir, Mansouri, Abdellah, Bouhamida, Mohamed, Chenafa, Mohammed
Format: Article
Language:English
Subjects:
Asymptotic properties
continuous stirred tank reactors
global stability
linearizing feedback
Lyapunov稳定性定理
Mathematical analysis
Mathematical models
Nonlinearity
Observers
Reactors
Stability
Tanks
variable structure observer
反馈控制
变结构
控制器设计
搅拌反应器
观测器
输入输出线性化
连续搅拌釜式反应器
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Summary:This paper deals with the design of an observer-based nonlinear control for continuous stirred tank reactors （CSTR）. A variable structure observer is constructed to estimate the whole process state variables. This observer is basically the conventional Luenberger observer with an additional switching term used to guarantee the robustness against modeling errors. The observer is coupled with a nonlinear controller, designed based on input-output linearization for controlling the reactor temperature. The asymptotical stability of the closed-loop system is shown by the Lyapunov stability theorem. Finally, computer simulations are developed for showing the performance of the proposed approach.
ISSN:1004-9541
2210-321X
DOI:10.1016/S1004-9541(11)60220-6