| 基于Kalman-OLS的聚丙烯熔融指数软测量 |
| |
| 引用本文： | 田华阁,田学民,邓晓刚.基于Kalman-OLS的聚丙烯熔融指数软测量[J].控制工程,2010(Z1). |
| |
| 作者姓名： | 田华阁 田学民 邓晓刚 |
| |
| 作者单位： | 中国石油大学（华东）信息与控制工程学院; |
| |
| 基金项目： | 国家863基金资助项目(2007AA04Z193);;山东省自然科学基金资助项目(Y2007G49) |
| |
| 摘 要： | 针对聚丙烯装置熔融指数软测量中的非线性和多工况切换操作问题,提出1种基于卡尔曼滤波-正交最小二乘(Kalman-OLS)的非线性自适应软测量方法。通过对聚丙烯装置反应系统进行机理分析,采用正交最小二乘方法(OLS)来拟和辅助变量和熔融指数之间的非线性关系。OLS方法的优化目标函数中同时考虑基于留一法均方误差(LOO MSE)和模型参数的局部正则化(LR),以提高模型的稀疏性和泛化能力。为适应装置多工况操作的现状,进一步提出使用Kalman滤波器对OLS模型参数进行自适应更新。工业数据应用结果表明,提出的Kal-man-OLS方法能够比偏最小二乘(PLS)、OLS方法更准确的预报聚丙烯熔融指数的变化。
|
| 关 键 词： | 聚丙烯 熔融指数 正交最小二乘 卡尔曼滤波 |
Polypropylene Melt Index Soft Sensor based on Kalman-Orthogonal Least Squares |
| |
| TIAN Hua-ge,TIAN Xue-min,DENG Xiao-gang.Polypropylene Melt Index Soft Sensor based on Kalman-Orthogonal Least Squares[J].Control Engineering of China,2010(Z1). |
| |
| Authors: | TIAN Hua-ge TIAN Xue-min DENG Xiao-gang |
| |
| Affiliation: | College of Information and Control Engineering/a>;China University of Petroleum/a>;Dongying 257061/a>;China |
| |
| Abstract: | A new method to build melt index soft sensor is proposed based on Kalman filter and orthogonal least squares(Kalman-OLS) for nonlinear and multi-grade polypropylene process.Mechanism analysis is performed on polypropylene reactors and orthogonal least squares(OLS) is applied to fit the nonlinear function between melt index and secondary variables.In order to enhance model generalization and sparseness,parameter local regularization and leave-one-out mean square error are combined in OLS cost function.Kalman... |
| |
| Keywords: | polypropylene melt Index orthogonal least squares kalman filter |
| 本文献已被 CNKI 等数据库收录！ |
