Vibration-based estimation of tension for an axially travelling web in roll-to-roll manufacturing
Vibration-based estimation of tension for an axially travelling web in roll-to-roll manufacturing
复制标题
基于振动的卷对卷制造中轴向行进幅材张力估计
DOI：
10.1088/1361-6501/aa9046
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发表时间：
2018-01-01
影响因子：
2.4
通讯作者：
Yin, Zhouping
中科院分区：
文献类型：
--
作者：
Ma, Liang;Chen, Jiankui;Yin, Zhouping
精确估计卷对卷制造中的卷材张力对于确保产品质量至关重要。本文提出了一种基于振动的幅材张力估计方法。利用哈密顿原理推导出运动控制方程，并用伽辽金法对其进行离散化和求解。固有频率是根据特征值方程计算的。本研究试图推导出轴向张力、行进速度和固有频率之间的近似拟合公式，利用测量的固有频率可以方便、快速地计算出卷材张力。激光位移传感器用于测量行进幅材的横向振动位移并检测自由振动频率。该方法的一个主要优点是其非接触式，在没有称重传感器的情况下更有用。进行了实验测试以确认所提出方法的有效性和准确性。将通过振动方法估计的幅材张力与测压元件测得的张力进行比较。
Precise estimation of web tension in roll-to-roll manufacturing is critical to ensure product quality. A vibration-based method to estimate web tension is proposed in this paper. By employing the Hamilton principle, the governing equations of motion are derived, which are discretized and solved by the Galerkin method. The natural frequencies are computed from the eigenvalue equation. This study attempts to derive an approximate fitting formula among the axial tension, the travelling speed and the natural frequency, from which the web tension can be calculated conveniently and quickly by employing the measured natural frequencies. A laser displacement sensor is used to measure the transverse vibration displacements of the travelling web and detect free vibration frequency. A major advantage of the proposed method is its contactless, which is more useful under conditions where load cells are not available. An experimental test is carried out to confirm the effectiveness and accuracy of the proposed approach. The web tensions estimated by the vibration method are compared with the measured tensions by load cells.