Patent ID: 7040353

Claim:
Method for controlling the weft yarn insertion into a weaving machine, according to which method a deflection brake provided between a feeder and a weaving shed is brought into engagement with the weft yarn with an adjustable braking force in timed adaptation to at least parts of the insertion, said method comprising the steps of: a. setting target positions of the brake beforehand for selected points in time within the time duration of an insertion, the target positions correlating with at least one functional parameter of the brake which is optimal for the weft yarn control at said points in time; b. detecting the actual position of the brake during an insertion at a respective one of said selected points in time; c. determining a deviation between said target position corresponding to said one point in time and said detected actual position of the brake and converting the deviation into a correction signal; and d. changing the functional parameter of the brake based on said correction signal for subsequent insertions until, at a subsequent detection of the actual position of the brake during a subsequent insertion, the actual position of the brake at least substantially coincides with the target position.