Changing unit and method for controlling a changing unit

摘要

The present invention relates to a changing unit for traversing of threads and, in particular, a control for a step - or servomotor in such a changing unit, of a yarn guide is moved via a belt drive. For improving the precision of the engine control, the rotational movements of a drive shaft of the motor, by means of an incremental encoder is detected and signaled to the control system. The control unit determines from the signals of the position as well as the movements of the yarn guide and use these in the case of the generation of the control of the motor.