| 摘要 |
A loom with an insertion brake (6) disposed between a yarn feeder (4) and the shed (3) of the loom, which insertion brake (6) comprises a movable brake element (21), which is capable of movement between two fixedly disposed yarn guides (20) from a position of rest on one side of the yarn (1) to an operative position on the other side of the yarn (1), wherein the movable brake element (21) is connected to a driving motor (23), the excitation of which is controlled by an electronic system, in which at least one programme for the time and the position of the movable brake element (21) is incorporated, wherein the electronic system comprises a position detection sensor (24) for sensing the instantaneous position of the brake element (12), wherein the electronic system compares the instantaneous brake element (21) position with the position which is desired according to the programme and, if a deviation is established between the sensed instantaneous position and the desired position, controls the amount of current being supplied to the motor in such a manner that said deviation is at least largely eliminated in combination with the reactive force of the yarn. |
