Phase-locked web position signal using web fiducials
    8.
    发明授权
    Phase-locked web position signal using web fiducials 有权
    相位锁定位置信号使用网络基准

    公开(公告)号:US08847185B2

    公开(公告)日:2014-09-30

    申请号:US13130592

    申请日:2009-12-07

    IPC分类号: G01N21/86 G05B19/404

    摘要: Approaches for enhancing web position determination involve phase locking a web movement encoder signal to a sensed web fiducial signal. Fiducials disposed along a longitudinal axis of a substrate are sensed and corresponding sensor signals are generated. An estimated web position is provided by one or more encoder signals. The phase difference between the sensor signals and the encoder signals is calculated and the web position error is determined based on the phase difference. The web position error signal can be fed back to adjust the encoder signals which improves the accuracy of the web position determination.

    摘要翻译: 用于增强网络位置确定的方法包括将网络移动编码器信号相位锁定到感测到的网络基准信号。 感测沿基板的纵向轴线布置的基准,并产生相应的传感器信号。 估计的网页位置由一个或多个编码器信号提供。 计算传感器信号和编码器信号之间的相位差,并根据相位差确定卷筒纸位置误差。 纸幅位置误差信号可以反馈,以调整编码器信号,提高纸幅位置确定的精度。