化工学报Issue(8)：3062-3070,9.DOI:10.3969/j.issn.0438-1157.2014.08.030
基于动态过程划分的熔融指数软测量建模
Dynamic process based soft sensing of melt flow rate
摘要
Abstract
Grade transition processes are critical for saving energy in polymerization, however, the traditional models do not pay much attention to the transitional process due to insufficiency of quality data. Therefore, based on the previous work of the three-stage decomposition modeling method, the overall process is further dealt with. In the polypropylene process, there are stable production processes for a single grade and grade transitional processes between two different grades. As these two kinds of processes have different dynamic characteristics, it is reasonable to divide data into different sub-domains according to different dynamic processes and develop sub-models in every domain. In this paper, construct ensemble of models based on different dynamic processes and a discriminant model to detect the beginning and completion of the transition were proposed. Finally, the proposed model was applied to industrial plant data and its higher prediction performance was verified, compared with a single model.关键词
模型/动态建模/聚合/三阶段模型/牌号切换过程Key words
model/dynamic modeling/polymerization/three-stage model/grade transitional process分类
化学化工引用本文复制引用
魏宇杰,尚超,高莘青,范志,黄德先..基于动态过程划分的熔融指数软测量建模[J].化工学报,2014,(8):3062-3070,9.基金项目
国家重点基础研究发展计划项目(2012CB720505)；国家高技术研究发展计划项目(2013AA040702)。@@@@ supported by the National Basic Research Program of China (2012CB720505) and the National High Technology Research and Development Program of China (2013AA040702) （2012CB720505）
