Invention Grant
US09249531B2 Tension-controlling method for a yarn unwinding from a storage yarn feeder to a textile machine
有权
用于从存放喂纱器到织机的纱线退绕的张力控制方法
- Patent Title: Tension-controlling method for a yarn unwinding from a storage yarn feeder to a textile machine
- Patent Title (中): 用于从存放喂纱器到织机的纱线退绕的张力控制方法
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Application No.: US13905361Application Date: 2013-05-30
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Publication No.: US09249531B2Publication Date: 2016-02-02
- Inventor: Pietro Zenoni , Luca Gotti
- Applicant: L.G.L. ELECTRONICS S.P.A.
- Applicant Address: IT
- Assignee: L.G.L. ELECTRONICS S.P.A.
- Current Assignee: L.G.L. ELECTRONICS S.P.A.
- Current Assignee Address: IT
- Agency: Cantor Colburn LLP
- Priority: ITTO2012A0487 20120604
- Main IPC: B65H51/22
- IPC: B65H51/22 ; B65H59/06 ; D04B15/44 ; D04B15/48 ; D03D47/36 ; B65H59/10 ; D03D47/34
Abstract:
The yarn tension is modulated by a yarn-braking device controlled by a control unit which receives signals of measured tension from a tension sensor and compares them with a reference tension signal in a control loop; as long as the reference tension remains unchanged, a first set of coefficients is used in the control loop causing the control loop to have a relatively slow behavior in relation to the error-compensating action; when a change in the reference tension occurs, the system switches to a second set of coefficients causing the control loop to have a relatively fast behavior; the second set of coefficients is maintained as long as the difference between the second value of the reference tension and the measured tension remains greater or equal to a predetermined minimum value, then the system switches again to the first set of coefficients.
Public/Granted literature
- US20130327877A1 Tension-controlling method for a yarn unwinding from a storage yarn feeder to a textile machine Public/Granted day:2013-12-12
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