Temperature control of polypropylene thermal cracking reactor by input/output linearization with two-degree-of-freedom structure

被引：1

作者：

Wantawee, Sathaporn ^{[1
]}

Panjapornpon, Chanin ^{[1
]}

Limtrakul, Sunun ^{[1
]}

Vatanatham, Terdthai ^{[1
]}

机构：

[1] Kasetsart Univ, Ctr Excellence Petrochem & Mat Technol, Dept Chem Engn, Fac Engn, Bangkok 10900, Thailand

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2015年 / 52卷

关键词：

Two-degree-of-freedom control; Bubbling fluidized bed; Input/output linearization; Nonlinear system; Polypropylene thermal cracking; Robust control; FLUIDIZED-BED REACTOR; OUTPUT-FEEDBACK CONTROLLERS; DENSITY POLYETHYLENE; NONLINEAR PROCESSES; PYROLYSIS; TIME;

D O I：

10.1016/j.jtice.2015.02.007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This work presents a model-based controller with a two-degree-of-freedom (2DOF) control structure for handling bed temperature of polypropylene cracking in a fluidized bed reactor. The control system is formulated based on a developed dynamic mathematical model of the reactor. The developed control system consists of an input/output (I/O) linearizing controller for tracking the desired output, a high-gain controller for disturbance rejection and an observer with linearizable error dynamics for compensated state variables from the measured outputs. The control performances of the method are evaluated through simulation under process uncertainties and model mismatch by comparing with a 1DOF input/output controller and a proportional-integral controller. The results show that the proposed controller based on 2DOF scheme can improve the control performances both process uncertainties and model mismatch. (C) 2015 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：72 / 78

页数：7

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