Yarn feeding device with learning procedure
AssigneeVandewiele Sweden AB
InventorsPär JOSEFSSON, Birger JOHANSSON
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Abstract
Described are, among other things, methods and devices for providing a learning procedure in a yarn feeding arrangement (12). The learning procedure aims at providing control data to the controller (32) about system components and behavior of system components of the yarn feeding arrangement beforehand, such that the controller has knowledge of the system components before the weaving machine (10) is started to operate at full operational speed.
Claims15
A yarn feeding arrangement for feeding weft yarn to a weaving machine, the yarn feeding arrangement comprising a motor driven bobbin drive and a motor driven loop buffer device, the yarn feeding arrangement further comprising a sensor configured to detect yarn motion, the yarn feeding arrangement comprising a controller for controlling the motor of the motor driven bobbin drive and the motor driven loop buffer device, wherein the controller is adapted to:
- drive the motor of the motor driven bobbin drive at a speed to feed a determined essentially average amount of weft yarn to be consumed by the weaving machine,
- drive the motor of the motor driven loop buffer device based on the difference between the output yarn motion from the motor driven bobbin drive and a motion model of weft insertion yarn motion in the weaving machine, wherein
- the controller is adapted to determine the motion model based on a learning procedure, wherein the learning procedure is configured to operate at least one of the motor driven bobbin drive and the motor driven loop buffer device.
Dependencies are inferred from the claim text.