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    • 22. 发明授权
    • Real-time determination of web tension and control using position sensors
    • 使用位置传感器实时确定纸张张力和控制
    • US06985789B2
    • 2006-01-10
    • US10743206
    • 2003-12-22
    • Daniel H. CarlsonThomas M. ClausenJohn T. Strand
    • Daniel H. CarlsonThomas M. ClausenJohn T. Strand
    • G06F19/00B23Q15/00B23Q16/00B65H26/00B65H43/08
    • B65H23/18B65H23/1888
    • Web tension in web material passing through a web transport system is determined in real time using position sensors coupled to driven rollers that define a beginning and an end of a tension zone. The position sensors on the rollers provide information related to the amount of strained web material that has been added and subtracted from the web material present in the tension zone. The amount of web material added to, subtracted from and present in the tension zone in a sample time period is then converted to an unstrained amount of web material that when combined provides an estimate for the present amount of unstrained web material present in the tension zone. Because the length of the tension zone is both fixed and known, the tension in the web material is determined from the present amount of unstrained web material in the tension zone.
    • 通过纸幅传送系统的纸幅材料中的网张力通过与定义张紧区域的开始和结束的从动辊连接的位置传感器实时确定。 辊子上的位置传感器提供了与从张力区域中存在的纤维网材料中加入和减去的应变幅材材料量相关的信息。 然后将在样品时间段内从拉伸区域中减去和存在的纤维网材料的量转化为无限量的纤维网材料,当其组合时,提供存在于张力区域中的当前量的未应变纤维网材料的估计值 。 由于张力区域的长度是固定的并且是已知的,因此幅材材料中的张力是根据张力区域中的当前无量纲的纤维网材料量确定的。