2011年6月
Novel soft sensor method for detecting completion of transition in industrial polymer processes
COMPUTERS & CHEMICAL ENGINEERING
- ,
- ,
- 巻
- 35
- 号
- 6
- 開始ページ
- 1135
- 終了ページ
- 1142
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.compchemeng.2010.09.003
- 出版者・発行元
- PERGAMON-ELSEVIER SCIENCE LTD
Soft sensors are widely used to estimate process variables that are difficult to measure online. In polymer plants that produce various grades of polymers, the quality of products must be estimated using soft sensors in order to reduce the amount of off-grade material. However, during grade transition, the predictive accuracy deteriorates because the state in polymer reactors is unsteady, causing the values of process variables to differ from the steady-state values used to construct regression models. Therefore, we have proposed to construct models that detect the completion of transition to ensure that the polymer quality evaluated after transition conforms to the predicted one. By using these models and regression models constructed for each product grade, the polymer quality can be predicted with high accuracy, selecting a regression model appropriately. The proposed method was applied to industrial plant data and was found to exhibit higher predictive performance than traditional methods. (C) 2010 Elsevier Ltd. All rights reserved.
- リンク情報
- ID情報
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- DOI : 10.1016/j.compchemeng.2010.09.003
- ISSN : 0098-1354
- Web of Science ID : WOS:000291441900012