Dynamic Analysis and Control of a Roll Bending Process

M. Hale, D. Hardt
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引用次数: 6

Abstract

Recent research has shown that it is possible to automate the roll bending process by adding a closed-loop controller that continuously measures the springback of the metal workpiece. This means that one-pass forming of arbitrary two-dimensional workpiece shapes is now possible, subject to limitations of the physical apparatus and the controller. The identification of these limitations is the subject of this paper. Toward that end, dynamic models are developed for the individual components of the roll bending apparatus and for the process as a whole. These models include the unique nonlinearities of the roll bending system and also reflect the differences in bending applications such as bending and straightening. The process models are the basis for control analysis and design. An experimental roll bending apparatus is used to evaluate the system models and verify the control design. The experimental results show that very good system response is possible using a simple controller. The results also illustrate the main limitation imposed on system response which is due to vibration of the workpiece.
轧辊弯曲过程的动态分析与控制
最近的研究表明,通过添加一个闭环控制器来连续测量金属工件的回弹,可以实现轧辊弯曲过程的自动化。这意味着任意二维工件形状的一次成形现在是可能的,受制于物理设备和控制器的限制。识别这些限制是本文的主题。为此,为轧辊弯曲装置的各个部件和整个过程开发了动态模型。这些模型包括轧辊弯曲系统独特的非线性,也反映了弯曲应用的差异,如弯曲和矫直。过程模型是控制分析和设计的基础。利用实验弯辊装置对系统模型进行了评估,并对控制设计进行了验证。实验结果表明,使用一个简单的控制器就可以实现很好的系统响应。结果还说明了工件振动对系统响应的主要限制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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