辽宁石油化工大学学报

辽宁石油化工大学学报 ›› 2022, Vol. 42 ›› Issue (6): 73-77.DOI: 10.3969/j.issn.1672-6952.2022.06.012

• 信息与控制工程 • 上一篇    下一篇

KPCA⁃GPR模型在常压塔塔顶汽油干点预测中的应用

郭丽莹(), 郎宪明()   

  1. 辽宁石油化工大学 信息与控制工程学院,辽宁 抚顺 113001
  • 收稿日期:2022-04-12 修回日期:2022-12-07 出版日期:2022-12-25 发布日期:2023-01-07
  • 通讯作者: 郎宪明
  • 作者简介:郭丽莹(1996⁃),女,硕士研究生,从事软测量技术原理与应用研究;E⁃mail:guoliying960302@126.com
  • 基金资助:
    中国博士后科学基金项目(2020M660125);辽宁省博士科研启动基金计划项目(2019?BS?158);辽宁省教育厅一般项目(L2020017);辽宁石油化工大学引进人才科研启动基金项目(2019XHHL?008)

Application of KPCA⁃GPR Model in Predicting the Dry Point of Gasoline on the Top of Atmospheric Tower

Liying Guo(), Xianming Lang()   

  1. School of Information and Control Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
  • Received:2022-04-12 Revised:2022-12-07 Published:2022-12-25 Online:2023-01-07
  • Contact: Xianming Lang

摘要:

由于常减压蒸馏过程的复杂多变性,过程变量耦合严重,直接建模会增加问题分析的难度。为了提高模型性能,首先采用核主元分析(KPCA)算法对模型的变量进行选择,再将经过处理的数据作为高斯过程回归(GPR)模型的输入,采用KPCA?GPR模型建立常压塔塔顶汽油干点的估计模型。该方法可解决不同变量之间的非线性相关性,并且具有灵活的非参数推广及超参数自适应调节等优点,通过计算经验置信区间,不仅可以对汽油干点进行预测估计,还可以做概率解释。仿真结果表明,KPCA?GPR模型取得了较好的估计结果。

关键词: 软测量, 核主成分分析, 稀疏核主成分分析, 最小二乘支持向量机, 汽油干点

Abstract:

Due to the complexity and variability of atmospheric and vacuum distillation process, the coupling between process variables is serious, and the direct modeling will increase the difficulty of problem analysis. In order to improve the performance of the model, KPCA algorithm was used to select the variables of the model, and then the processed data were used as the input of the Gaussian process regression (GPR) model, and KPCA?GPR was used to establish the estimation model of the gasoline dry point on the atmospheric tower roof. The method solves the strong nonlinear correlation between different variables, and has the advantages of flexible nonparametric generalization and super?parameter adaptive adjustment. By calculating the empirical confidence interval, not only can the dry point of gasoline be predicted and estimated, but also can do the probability interpretation. The simulation results show that the KPCA?GPR method achieves better estimation results.

Key words: Soft sensor, Kernel principal component analysis, Sparse kernel principal component analysis, Least squares support vector machine, Gasoline dry point

中图分类号: 

引用本文

郭丽莹, 郎宪明. KPCA⁃GPR模型在常压塔塔顶汽油干点预测中的应用[J]. 辽宁石油化工大学学报, 2022, 42(6): 73-77.

Liying Guo, Xianming Lang. Application of KPCA⁃GPR Model in Predicting the Dry Point of Gasoline on the Top of Atmospheric Tower[J]. Journal of Liaoning Petrochemical University, 2022, 42(6): 73-77.

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链接本文: http://journal.lnpu.edu.cn/CN/10.3969/j.issn.1672-6952.2022.06.012

               http://journal.lnpu.edu.cn/CN/Y2022/V42/I6/73