| 摘要 |
<p>The invention provides an optical fiber producing apparatus for non-contact fiber tension monitoring, having: a traveling wave wavelet transformation processor (41) and a time-of-flight fiber tension processor (42). The traveling wave transformation processor (41) responds to a fiber transverse position processor signal representing information relating to a traveling wave propagating in one direction along a moving fiber (F) and a reflection of the traveling wave propagating back in an opposite direction along the moving fiber (F), and provides a traveling wave transformation processor signal. The time-of-flight fiber tension processor (42) responds to the traveling wave transformation processor signal, and further responsive to a fiber draw speed signal, and provides a time-of-flight fiber tension processor signal indicative of a fiber tension of the moving fiber (F) using traveling wave time-of-flight analysis. The optical fiber producing apparatus performs non-contact fiber tension monitoring using a physical description of the fiber motion which accurately accounts for the fact that the fiber (F) is moving, particularly at a high rate of speed, which has an influence on the time-of-flight of traveling waves propagating on the moving fiber (F). The non-contact fiber tension monitoring is extremely accurate at high fiber speeds. <IMAGE></p> |
