An integrated system of inferential measurement and control of polymer extrusion for self-tuning optimisation and response to disturbances

聚合物挤出推理测量和控制的集成系统，用于自调节优化和干扰响应

• 批准号: EP/F021070/1
• 负责人: Kang Li
• 金额: $ 35.78万
• 依托单位: Queen's University Belfast
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF021070%2F1
• 关键词: integrated; system; inferential; measurement; control

The process of extrusion, whereby polymer granules are melted and conveyed by a screw rotating in a heated barrel, forms the basis of practically all polymer processing operations. In this project an integrated framework for improved performance of extrusion processes will be developed through advances in process modelling, inferential measurement and a more intelligent approach to control of the process. This will require the development of transparent on-line models integrating first-principles' models with analysis of observable on-line data. It will enable inferential measurement of key performance indicators; identification of process faults; on-line optimisation of settings; and an ability to self-tune to changing feed materials and conditions. The end result will be a novel methodology for extrusion control which will provide a comprehensive framework for accurate, efficient and flexible extrusion processing. Such a device would have a major impact on achieving higher product quality and greater potential of recycled feed material while reducing downtime, energy consumption and wastage of valuable polyolefin resources. In order to develop this system, pivotal research is required in a number of areas. These include new theory (development of novel modelling techniques; robust on-line system identification for feed material changes); innovative practical measurements (real time data acquisition and processing of high frequency signals) and innovative data analysis for interpretation of complex data (correlation of data with non-homogenous melting, identification of material degradation, integration in a robust, adaptive control strategy). The development of techniques in this research will also provide an ideal platform for achieving greater success in emerging complex processing applications, for example in reactive extrusion, micro-extrusion and compounding of nanocomposites.

挤出过程是聚合物颗粒熔化并通过在加热桶中旋转的螺杆输送的过程，构成了几乎所有聚合物加工操作的基础。在该项目中，将通过工艺建模、推理测量和更智能的工艺控制方法的进步，开发一个用于改进挤出工艺性能的集成框架。这将需要开发透明的在线模型，将第一原理模型与可观察在线数据的分析相结合。它将能够对关键绩效指标进行推断测量；识别过程故障；在线优化设置；以及根据不断变化的饲料材料和条件进行自我调节的能力。最终结果将是一种新颖的挤出控制方法，它将为准确、高效和灵活的挤出加工提供全面的框架。这种设备将对实现更高的产品质量和更大的回收原料潜力产生重大影响，同时减少停机时间、能源消耗和宝贵聚烯烃资源的浪费。为了开发这个系统，需要在许多领域进行关键研究。其中包括新理论（新颖建模技术的开发；针对饲料材料变化的强大在线系统识别）；创新的实用测量（实时数据采集和高频信号处理）和用于解释复杂数据的创新数据分析（数据与非均匀熔化的关联、材料退化的识别、鲁棒的自适应控制策略的集成）。这项研究中技术的发展也将为在新兴的复杂加工应用中取得更大的成功提供一个理想的平台，例如在反应挤出、微挤出和纳米复合材料的复合方面。

项目成果

Extruder melt temperature control with fuzzy logic

• DOI: 10.3182/20110828-6-it-1002.01576
• 发表时间: 2011-01-01
• 期刊: IFAC
• 作者: Abeykoon, C.;Li, K.;Irwin, G.W.
• 通讯作者: Irwin, G.W.

Modelling the Effects of Operating Conditions on Die Melt Temperature Homogeneity in Single Screw Extrusion

• DOI: 10.1049/ic.2010.0254
• 发表时间: 2010-01-01
• 期刊: Proceedings of the UKAC International Conference on Control 2010
• 作者: Abeykoon, Chamil;Kang Li;Kelly, Adrian L.
• 通讯作者: Kelly, Adrian L.

Monitoring and modelling of the effects of process settings and screw geometry on melt pressure generation in polymer extrusion

• DOI: 10.1504/ijscip.2012.050468
• 发表时间: 2012-01-01
• 期刊: Int. J. Syst. Control Inf. Process
• 作者: Abeykoon, C.;Li, K.;Kelly, A.L.
• 通讯作者: Kelly, A.L.

Investigation of the temperature homogeneity of die melt flows in polymer extrusion

聚合物挤出中模头熔体流动的温度均匀性研究

• DOI: 10.1002/pen.23784
• 发表时间: 2013
• 期刊: Polymer Engineering & Science
• 影响因子: 3.2
• 作者: Abeykoon C