Method and apparatus for controlling a drafting unit

Details Method and apparatus for controlling a drafting unit Method and apparatus for controlling a drafting unit

1992-01-09

1992-08-04

Schroeder, Werner H.

Textiles: fiber preparation

Working

Drafting

364470, G01D 304, D01H 532

Patent

active

051347555

ABSTRACT:
A method and apparatus for controlling a drafting unit for textile slivers. The driving apparatus for the drafting unit is controlled by a main control and at least one auxiliary control. The drafting unit includes an upstream measuring element and a downstream measuring element which deliver measured signals to a central computer unit. A signal representing the inlet sliver cross-section is determined by means of an identification field parameter and by using the downstream measured signal. The identification field parameter is continuously adjusted during operation. A threshold switch is used to control the compensation for irregularities in the incoming sliver.

REFERENCES:
patent: 4494204 (1985-01-01), Hosel
patent: 4653153 (1987-05-01), Felix et al.
patent: 4791706 (1988-12-01), Weining et al.
patent: 4812993 (1989-03-01), Konig et al.
patent: 4974296 (1990-12-01), Vidler

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