Flatness Measurement Using Two Laser Stripes to Remove the Effects of Vibrations
Flatness Measurement Using Two Laser Stripes to Remove the Effects of Vibrations
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DOI：
10.1109/tia.2015.2413871
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发表时间：
2015-03
影响因子：
4.4
通讯作者：
R. Usamentiaga;J. Molleda;D. García;F. Bulnes;J. Entrialgo;Carlos Manuel Suárez Alvarez
中科院分区：
文献类型：
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作者：
R. Usamentiaga;J. Molleda;D. García;F. Bulnes;J. Entrialgo;Carlos Manuel Suárez Alvarez
平直度测量和控制是生产高质量钢材产品的要求。最流行的测量方法之一是基于激光光切传感器。该方法是在带钢沿滚道沿着向前移动时，将激光条纹投射到带钢上，提取出的激光条纹提供了带钢纤维长度的信息，用于计算板形。这种平整度测量方法易于维护，提供准确的结果，并且可以使用低成本组件构建。然而，它有一个主要的缺点：它受到振动的严重影响。因此，当带材的运动受到振动的影响时，所得到的平直度测量是不准确的。本文提出了一种解决方案：使用第二个激光条纹，并利用这些冗余信息来估计和消除振动。本文介绍了联合收割机激光条纹和产生无振动的结果所需的程序。为了测试所提出的方法，建立了一个机械原型，并用于产生振动。结果显示出优异的性能，并表明所提出的方法提出了一个更有效的解决方案，比传统的方法，使用一个单一的激光条纹。
Flatness measurement and control is a requirement in the production of high-quality rolled steel products. One of the most popular measurement methods is based on laser light-sectioning sensors. This method is based on the projection of a laser stripe onto the steel strip while it moves forward along a roll path. The extraction of the laser stripes provides information about the lengths of the strip fibers, which are used to compute flatness. This flatness measurement method is easy to maintain, provides accurate results, and can be built using low-cost components. However, it has a major disadvantage: it is severely affected by vibrations. Thus, when the movement of the strips is affected by vibrations, the resulting flatness measurement is inaccurate. This paper proposes a solution: using a second laser stripe and taking advantage of this redundant information to estimate and remove vibrations. This paper presents the procedure required to combine the laser stripes and produce a vibration-free result. In order to test the proposed approach, a mechanical prototype is built and used to produce vibrations. Results show excellent performance and indicate that the proposed approach presents a far more efficient solution than traditional methods using a single laser stripe.