Method of controlling the tension of an advancing yarn

Details Method of controlling the tension of an advancing yarn Method of controlling the tension of an advancing yarn

1996-06-27

1997-09-09

Stryjewski, William

Textiles: spinning, twisting, and twining

Apparatus and processes

Monitor and control

57100, 57332, D01H 792, D02G 106

Patent

active

056644094

ABSTRACT:
A method is described for controlling the tension of an advancing yarn, which is crimped in a friction false twist unit of a false twist crimping machine. In accordance with the method, the tension of the advancing yarn is measured downstream of the friction false twist unit and the yarn tension is converted via a time filter and by comparison with a predetermined desired value into an adjustment signal for correcting the friction false twist unit, the control range being determined by defined limit values of the adjustment signal. The adjustment signal is a current value and is corrected adaptively via a PI controller, the control behavior of which takes into account the quotient from the change of the yarn tension and the change of the current value of the adjustment signal.

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patent: 5369945 (1994-12-01), Wessolowski et al.
patent: 5440870 (1995-08-01), Neumann

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