Predictive control algorithm based on local-modeling and its application in aromatics isomerization process

doi:10.3969/j.issn.0438-1157.2012.09.014

CIESC Journal ›› 2012, Vol. 63 ›› Issue (9): 2766-2770.DOI: 10.3969/j.issn.0438-1157.2012.09.014

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Predictive control algorithm based on local-modeling and its application in aromatics isomerization process

LIU Jun, LI Lijuan, ZHANG Shi

College of Automation and Electrical Engineering, Nanjing University of Technology, Nanjing 211816, Jiangsu, China

Received:2012-06-12 Revised:2012-06-19 Online:2012-09-05 Published:2012-09-05
Supported by:
supported by the Natural Science Fund for Colleges and Universities in Jiangsu Province(09KJB510003),and the National Natural Science Foundation of China(61203072).

基于局部建模的预测控制及其在芳烃异构化过程的应用

刘君, 李丽娟, 张湜

南京工业大学自动化与电气工程学院, 江苏南京 211816

通讯作者: 刘君
作者简介:刘君(1987-),男,硕士。
基金资助:
江苏省高校自然科学基金项目(09KJB510003);国家自然科学基金项目(61203072)。

Abstract

Abstract: A predictive control algorithm based on local modeling is presented for a class of non-linear systems.In order to obtain reasonable training data,both the Euclidean distance between the sample data and angle of vector are considered.And the algorithm is applied in the simulation control of aromatics isomerization process.Firstly,the local-model is obtained as predictive model by least squares support vector machine(LS-SVM)algorithm.And then,the control values are obtained by the rolling particle swarm optimization(PSO)algorithm.Finally,the presented algorithm is applied in the simulation control of aromatics isomerization process,and the results show the effectiveness and robustness of the algorithm.

Key words: predictive control, local-modeling, PSO, aromatics isomerization

摘要： 针对一类非线性系统提出了基于局部建模的预测控制算法,对于局部模型的训练数据选取,同时考虑了样本数据之间的欧氏距离与向量的夹角,使得训练数据的选取更合理,并对芳烃异构化过程进行了实验仿真。首先通过最小二乘支持向量机进行局部建模,并将局部模型作为算法的预测模型。然后利用粒子群优化算法进行滚动优化,寻找到最优控制量。最终仿真实验验证了该算法的有效性和鲁棒性。

关键词: 预测控制, 局部建模, 粒子群优化, 芳烃异构化

CLC Number:

TP273

LIU Jun, LI Lijuan, ZHANG Shi. Predictive control algorithm based on local-modeling and its application in aromatics isomerization process[J]. CIESC Journal, 2012, 63(9): 2766-2770.

刘君, 李丽娟, 张湜. 基于局部建模的预测控制及其在芳烃异构化过程的应用[J]. 化工学报, 2012, 63(9): 2766-2770.

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Predictive control algorithm based on local-modeling and its application in aromatics isomerization process

基于局部建模的预测控制及其在芳烃异构化过程的应用

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