| 摘要 |
PCT No. PCT/SE90/00098 Sec. 371 Date Sep. 30, 1991 Sec. 102(e) Date Sep. 30, 1991 PCT Filed Feb. 15, 1990 PCT Pub. No. WO90/09474 PCT Pub. Date Aug. 23, 1990.A yarn tension control system incorporated into a computerized control system of a textile machine for controlling the operation of a fast responding braking or friction device. The braking or friction device is positioned along a weft yarn path and includes a functional control unit operably coupled to the computerized control system, a tension sensing arrangement for sensing the tension of a strand of weft yarn passing therethrough, and a friction force applying arrangement for applying a friction force to the strand of weft yarn in dependence upon the tension sensed by the tension sensing arrangement.
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