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(11) | EP 2 402 274 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Yarn winding device |
| (57) A yarn winding device (100) includes a package driving unit (72) that rotates a bobbin
(B); a rotational-speed detecting unit (73) that detects a rotational speed of the
bobbin (B); a traverse guide (61) that traverses a yarn to be wound around the bobbin
(B); a traverse-guide driving unit (62) that drives the traverse guide (61); a traverse
control unit (81) that controls driving of the traverse guide (61); and a target-position-command
determining unit that determines a pre-correction target-position command (Pt) for
the traverse-guide driving unit (62) from the rotational speed of the bobbin (B).
The traverse control unit (81) calculates a post-correction target-position command
(Ps) from a target-position correction amount (Cp), which is a feed-forward component
depending on a detection delay time of the rotational-speed detecting unit (73) and
a response delay time of the traverse-guide driving unit (62), and the pre-correction
target-position command (Pt), and controls the driving of the traverse-guide driving
unit (62) according to the post-correction target-position command (Ps).
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