US4497086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating method and system for producing a uniform sliver in a carding machine
Assignee: Truetzschler GmbH and Co KG
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Filing: 1982-10-27
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Granted: 1985-02-05
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Expires: 2002-10-27
Abstract
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.
Inventors
- 👤 Rolf Guse
- 👤 Norbert Tauber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:11
CPC Classifications
D; D01; D01G; D01G23/00; D01G23/06; D01G15/00; D01G15/02; D01G15/12; D01G15/36
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
88 words
A regulating method for obtaining a uniform sliver delivered by a carding machine having a drive, comprising the following steps: (a) generating a signal representing a deviation of actual properties of the sliver from desired properties thereof; (b) applying said signal by a PI-regulator to said drive for regulating said drive as a function of said deviation; said PI-regulator having a regulating time constant; and (c) varying the regulating time constant of said PI-regulator as a function of a traveling speed of fiber material in said carding machine.
Claim 2
Dependent Claim
88 words
A regulating method for obtaining a uniform sliver delivered by a carding machine having a drive, comprising the following steps: (a) generating a signal representing a deviation of actual properties of the sliver from desired properties thereof; (b) applying said signal by a PI-regulator to said drive for regulating said drive as a function of said deviation; said PI-regulator having a regulating time constant; and (c) varying the regulating time constant of said PI-regulator as a function of a traveling speed of fiber material in said carding machine.
Claim 3
Dependent Claim
179 words
A regulating apparatus for obtaining a uniform sliver delivered by a carding machine; the carding machine having a fiber-engaging roller and a drive therefor, comprising (a) an rpm setter operatively connected to said drive for determining an operational speed for said drive; (b) signal generating means for producing a first signal as a function of actual properties of the sliver; (c) a PI-regulator having means for determining a regulating time constant of said PI-regulator; said PI-regulator being operatively connected to said signal generating means for receiving said first signal and for generating a second, regulating signal; said PI-regulator being operatively connected to said drive for applying thereto said second signal; (d) a regulating time constant setter operatively connected to said means for determining a regulating time constant; and (e) means for effecting cooperation between said rpm setter and said regulating time constant setter for adjusting said regulating time constant setter as a function of adjustments of said rpm setter, whereby the regulating time constant of said PI-regulator is varied as a function of the rpm of said fiber-engaging roller.
Claim 4
Dependent Claim
179 words
A regulating apparatus for obtaining a uniform sliver delivered by a carding machine; the carding machine having a fiber-engaging roller and a drive therefor, comprising (a) an rpm setter operatively connected to said drive for determining an operational speed for said drive; (b) signal generating means for producing a first signal as a function of actual properties of the sliver; (c) a PI-regulator having means for determining a regulating time constant of said PI-regulator; said PI-regulator being operatively connected to said signal generating means for receiving said first signal and for generating a second, regulating signal; said PI-regulator being operatively connected to said drive for applying thereto said second signal; (d) a regulating time constant setter operatively connected to said means for determining a regulating time constant; and (e) means for effecting cooperation between said rpm setter and said regulating time constant setter for adjusting said regulating time constant setter as a function of adjustments of said rpm setter, whereby the regulating time constant of said PI-regulator is varied as a function of the rpm of said fiber-engaging roller.
Claim 5
Dependent Claim
19 words
A regulating apparatus as defined in claim 2, wherein said rpm setter comprises a variable potentiometer having linear characteristics.
Claim 6
Dependent Claim
21 words
A regulating apparatus as defined in claim 2, wherein said regulating time constant setter comprises a variable potentiometer having non-linear characteristics.
Claim 7
Dependent Claim
21 words
A regulating apparatus as defined in claim 2, wherein said regulating time constant setter comprises a variable potentiometer having logarithmic characteristics.
Claim 8
Dependent Claim
23 words
A regulating apparatus as defined in claim 2, wherein said PI-regulator has an I-part including said means for determining a regulating time constant.
Claim 9
Dependent Claim
44 words
A regulating apparatus as defined in claim 2, wherein said means for determining a regulating time constant includes an RC component having a variable resistor; said regulating time constant setter being coupled to said variable resistor for varying the resistance of said RC component.
Claim 10
Dependent Claim
27 words
A regulating apparatus as defined in claim 2, wherein said means for effecting cooperation comprises coupling means connecting said rpm setter with said regulating time constant setter.
Claim 11
Dependent Claim
26 words
A regulating apparatus as defined in claim 8, wherein said coupling means includes means for electrically connecting said rpm setter with said regulating time constant setter.
Claim 12
Dependent Claim
26 words
A regulating apparatus as defined in claim 8, wherein said coupling means includes means for electronically connecting said rpm setter with said regulating time constant setter.
Claim 13
Dependent Claim
42 words
A regulating apparatus as defined in claim 8, wherein said rpm setter and said regulating time constant setter have respective rotary setting shafts; said coupling means comprises gears mounted on said shafts and meshing with one another for connecting said shafts together.
Claim 14
Dependent Claim
26 words
A regulating apparatus as defined in claim 8, wherein said coupling means includes means for mechanically connecting said rpm setter with said regulating time constant setter.
Claim 15
Dependent Claim
38 words
A regulating apparatus as defined in claim 2, wherein said drive is a rotary drive motor and further wherein said regulating time constant setter comprises a tachogenerator connected to said drive motor for responding to the rpm thereof.
Claim 16
Dependent Claim
25 words
A regulating apparatus as defined in claim 13, further comprising a transducer connected between said tachogenerator and said means for determining a regulating time constant.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-05 | 1988-08-06 | 1989-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-05 | 1992-08-06 | 1993-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-05 | 1996-08-06 | 1997-02-05 | $7700.00 | Window Closed / Lapsed |