CAJ | 학술논문

聚合反应过程具有非线性、时变性和不确定性等特点，这给聚合反应过程的建模和模型的在线应用带来了一定的问题。本文以氯乙烯悬浮聚合反应过程为对象，研究基于滑动时间窗口有效样本数据的模型参数在线估计技术，提出一种基于滚动时域估计(MHE)的方法，对氯乙烯聚合反应过程中传热模型中的关键时变参数——传热系数进行在线估计与实时校正。应用结果表明，基于 MHE 在线参数估计方法的有效性与稳定性，较好地提高了模型的自适应性和在线预测精度。
취합반응과정구유비선성、시변성화불학정성등특점，저급취합반응과정적건모화모형적재선응용대래료일정적문제。본문이록을희현부취합반응과정위대상，연구기우활동시간창구유효양본수거적모형삼수재선고계기술，제출일충기우곤동시역고계(MHE)적방법，대록을희취합반응과정중전열모형중적관건시변삼수——전열계수진행재선고계여실시교정。응용결과표명，기우 MHE 재선삼수고계방법적유효성여은정성，교호지제고료모형적자괄응성화재선예측정도。
Polymerization processes often are characterized by nonlinear, time variability and uncertainty, which caused great difficulties in modeling and online applications of the model for polymerization process. An online parameter estimation technology,based on moving horizon estimation,is researched for vinyl chloride suspension polymerization process in the paper. On the basis of corrected polymerization mechanism model, time varying heat transfer coefficient of vinyl chloride polymerization process is estimated and predicted online using moving horizon estimation (MHE) method. The application result indicates that the online parameter estimation based on MHE method is effective and stable. And self-adaptive and online forecast accuracy of the mechanism model is improved simultaneously.