| 聚丙烯双环管反应器熔融指数机理建模 |
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| 引用本文： | 田华阁,车荣杰,田学民.聚丙烯双环管反应器熔融指数机理建模[J].控制工程,2010,17(2). |
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| 作者姓名： | 田华阁 车荣杰 田学民 |
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| 作者单位： | 中国石油大学(华东)信息与控制工程学院,山东,东营,257061 |
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| 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) |
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| 摘 要： | 针对聚丙烯双环管反应器的工艺特点,提出了一种聚丙烯熔融指数软测量机理建模方法。该方法在单环管熔融指数预报模型的基础上,根据聚合物混合原理,建立了两种适用于双环管反应器的机理模型:指数模型和幂数模型,并采用带遗忘因子的递推最小二乘法(FFRLS)和粒子群算法(PSO)辨识模型参数,增强模型的适应性。最后,利用某装置实际生产数据进行模型验证,结果表明,所建模型的预报结果与实验室化验值吻合较好,能够在很大范围内跟踪反应器内熔融指数的变化。
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| 关 键 词： | 软测量 双环管反应器 机理建模 参数辨识 熔融指数 |
First-Principle Modeling of Polypropylene Melt Index for Dual-loop Reactor |
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| TIAN Hua-ge,CHE Rong-jie,TIAN Xue-min.First-Principle Modeling of Polypropylene Melt Index for Dual-loop Reactor[J].Control Engineering of China,2010,17(2). |
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| Authors: | TIAN Hua-ge CHE Rong-jie TIAN Xue-min |
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| Affiliation: | College of Information and Control Engineering/a>;China University of Petroleum/a>;Dongying 257061/a>;China |
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| Abstract: | An improved soft-sensing method of polypropylene melt index is developed based on the unique features of polypropylene dual-loop reactor.On the basis of melt index predictive model in single-loop reactor and polymer blend principle,two mechanism models to the dual-loop reactor are given,which are called exponential model and power model.The recursive least square method with forgetting factor (FFRLS) and the particle swarm optimization (PSO) algorithm are used to identify the unknown model parameters respec... |
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| Keywords: | soft sensor dual-loop reactor first-principle modeling parameter identification melt index |
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