| 摘要 |
PCT No. PCT/CH93/00049 Sec. 371 Date Oct. 5, 1993 Sec. 102(e) Date Oct. 5, 1993 PCT Filed Feb. 26, 1993 PCT Pub. No. WO93/18213 PCT Pub. Date Sep. 16, 1993.A drawing unit contains two drawing zones, one of which is variable and driven by two motors. The desired draw is set by means of a control of the speed of one of the motors, preferably of the motor for the predrawing zone. This control of the speed is carried out by way of a draw correction value which is calculated from the deviation between the desired draw and the actual draw calculated from the speed of the fibre sliver at the entrance and at the exit of the drawing unit. This draw regulation allows a rapid reaction to fluctuations in the draw, simple correcting measures and drift-free operation.
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