Nonlinear MPC of a multi-zone multi-feed LDPE autoclave reactor

被引：7

作者：

Jacob, Noel C. ^{[1
]}

Dhib, Ramdhane ^{[1
]}

机构：

[1] Ryerson Univ, Dept Chem Engn, Toronto, ON M5B 2K3, Canada

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2012年 / 18卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Nonlinear model predictive control; Unscented Kalman filter; Non-square systems; Polyethylene; MODEL-PREDICTIVE CONTROL; LOW-DENSITY POLYETHYLENE; DIFUNCTIONAL INITIATORS; DYNAMIC SIMULATION; VESSEL REACTORS; POLYMERIZATION; OPTIMIZATION; ETHYLENE; SYSTEMS; STABILITY;

D O I：

10.1016/j.jiec.2012.04.001

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper discusses the design of a model-based multivariable nonlinear model predictive control (NMPC) formulation for the control of a multi-zone multi-feed LDPE autoclave reactor. Unscented Kalman filtering (UKF) state estimation was employed for online estimation of the plant states and disturbances. In addition to structural plant-model mismatch and noisy process measurements, the closed-loop performance of the UKF based NMPC scheme was investigated under parametric uncertainty in the kinetic rate constants. The closed-loop NMPC performance was also assessed for polymer grade changes, and for disturbance rejection at both open-loop stable and unstable operating regions. (C) 2012 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：1781 / 1795

页数：15

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