Title:
給糸装置
Document Type and Number:
Japanese Patent JP4505223
Kind Code:
B2
Abstract:
The invention relates to a yarn feeding device (F) for weaving or knitting machines whose winding element (W) is driven by an electric motor (M) controlled by an electronic speed control device (CU). According to the invention, the electric motor (M) is a synchronous motor, in particular, a permanent magnet (PM) motor with the speed control device (CU) provided for effecting a permanent vector control with the stator being sinusoidally acted upon. Continuously determined information pertaining to the relevant rotational position of the rotor (R) of the motor (M) is used in the speed control device (CU), which serves to perform permanent vector control, in order to adjust at least one predetermined rotational position (X 1 , X 2 ) of the winding element (W).
Inventors:
Michael Arataro
Lars Helge Gottfried Friedel
Lars Helge Gottfried Friedel
Application Number:
JP2003532391A
Publication Date:
July 21, 2010
Filing Date:
September 24, 2002
Export Citation:
Assignee:
Eropa Akchen Gesell Shaft
International Classes:
D03D47/36; B65H51/22; D04B15/48
Domestic Patent References:
| JP7238441A |
Foreign References:
| EP0580267A1 | ||||
| EP0327973A1 | ||||
| US4814677 | ||||
| EP1052766A2 |
Attorney, Agent or Firm:
Katsuhisa Ito
Takehiko Kobayashi
Yoshikazu Tani
Kazuo Abe
Takehiko Kobayashi
Yoshikazu Tani
Kazuo Abe