Method of controlling tension in a yarn sheet during winding

Details Method of controlling tension in a yarn sheet during winding Method of controlling tension in a yarn sheet during winding

1988-10-11

1990-10-30

Matecki, Katherine

Winding, tensioning, or guiding

Coil holder or support

Spool or core

28194, B65H 5900

Patent

active

049663330

ABSTRACT:
Yarn sheet tension in a warp beaming operation is controlled by supplying a primary analog correcting signal to the drive of the warp beam based upon ultrasonic measurement of the progressively increasing effective beam diameter and by adding a supplementary proportional-plus-integral-plus-derivative (PID) correcting signal thereto based upon detected movements of a movable dancer roll biased into peripheral engagement with the yarn sheet as it is delivered to the warp beam.

REFERENCES:
patent: 3244954 (1966-04-01), Branco
patent: 3898436 (1975-08-01), Pottebaum et al.
patent: 4525905 (1985-07-01), Bogucki-Land
patent: 4565334 (1986-01-01), Ruhl
patent: 4736900 (1988-04-01), Okamura

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