Regulating method and system for producing a uniform sliver in a

Details Regulating method and system for producing a uniform sliver in a Regulating method and system for producing a uniform sliver in a

1982-10-27

1985-02-05

Rimrodt, Louis K.

Textiles: fiber preparation

Working

Carding

19106R, 19240, D01G 1540, D01G 1548, D01H 542

Patent

active

044970862

ABSTRACT:
A regulating apparatus for obtaining a uniform sliver delivered by a carding machine includes an rpm setter connected to a roller drive of the carding machine for determining an operational speed for the drive, a signal generator for producing a first signal as a function of actual properties of the sliver and a PI-regulator having a component determining a regulating time constant. The PI-regulator is connected to the signal generator for receiving the first signal and for generating a second, regulating signal. Further, the PI-regulator is connected to the drive for applying the second signal thereto. A regulating time constant setter is operatively connected to the component which determines a regulating time constant. The rpm setter and the regulating time constant setter cooperate for adjusting the regulating time constant setter as a function of adjustments of the rpm setter, whereby the regulating time constant of the PI-regulator is varied as a function of the rpm of the fiber-engaging roller.

REFERENCES:
patent: 3141202 (1964-07-01), Linnert et al.
patent: 4075739 (1978-02-01), Staheli
patent: 4161052 (1979-07-01), Erben
patent: 4271565 (1981-06-01), Grunder
patent: 4393547 (1983-07-01), Hosel

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