Inverter regulating motor drive of winding machine - corrects calculated drive regulator output frequency in dependence on detected tension of wound material web

摘要

The regulator (10) uses a processor (15) providing the mean output frequency of the drive regulator for each of a number of successive time sections during the winding operation. Each mean value is transferred to a memory (16) and used to calculate the required drive regulator output frequency for a subsequent time section. Correction of the required frequency is carried out in dependence on the detected tension applied to the wound material web to match the winding rate to the feed rate of the latter. Pref. The required frequency is obtained from the mean output frequency for the previous time section multiplied by a given factor of less than 1. ADVANTAGE - Ensures uniform around product. Space for dancer roller can be reduced.