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Controlling Process Parameters during Plasticizing Stage in Plastic Injection Molding.

机译：在塑料注射成型的塑化阶段控制工艺参数。

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摘要

This study aims at controlling the two process parameters, screw rotational speed and hydraulic back pressure during plasticizing stage of injection molding (IM) process, which can lead to better product quality control and minimize part rejects. The controller used in this research is dynamic matrix control (DMC), which is capable of handling the IM processes. DMC is a commonly used predictive controller and can control processes that have non-linear, multivariable, and time delay characteristics. Several experiments were conducted on the injection molding machine (IMM) in order to formulate models of the screw rotational speed and hydraulic back pressure processes. The models were used to perform control simulations using the DMC scheme. From these simulations, it was shown that DMC can be used to control the IM processes during plasticization. Practical implementation of the controller was conducted and the control performance of the developed DMC algorithm. To the best of my knowledge, this research represents the first time that MIMO MPC is used for controlling hydraulic back pressure and screw rotational speed in injection molding. The results of this study demonstrate that future studies on polymer viscosity control could be conducted using models that relate it to screw rotational speed and hydraulic back pressure.
机译：这项研究旨在控制注射成型（IM）塑化阶段的两个工艺参数，螺杆转速和液压背压，从而可以更好地控制产品质量并最大程度地减少零件次品。本研究中使用的控制器是动态矩阵控制（DMC），它能够处理IM过程。 DMC是常用的预测控制器，可以控制具有非线性，多变量和时间延迟特性的过程。为了建立螺杆转速和液压背压过程的模型，在注塑机（IMM）上进行了一些实验。这些模型用于使用DMC方案执行控制仿真。从这些模拟中可以看出，DMC可用于控制塑化过程中的IM过程。进行了控制器的实际实现，并开发了DMC算法的控制性能。据我所知，这项研究代表了MIMO MPC首次用于控制注塑成型中的液压背压和螺杆转速。这项研究的结果表明，可以使用与螺杆转速和液压背压相关的模型进行聚合物粘度控制的未来研究。

著录项

  • 作者

    Hu, Bing.;

  • 作者单位

    University of New Brunswick (Canada).;

  • 授予单位 University of New Brunswick (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.Sc.E.
  • 年度 2010
  • 页码 109 p.
  • 总页数 109
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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