Abstract:

The hardware part of the autoleveller system was built up of the touch panel, the encoder, the displacement sensor, PLC and inverter motor. It can be easily to determinate the delay time of the open-loop autoleveller system of the carding machine through the length measuring and marking method. Finally, abandoning the conventional timing delay law, the displacement method was used to design the timing delay control program to meet the demand of targeted leveling of the open-loop autoleveller system. It shows that the weight unevenness of the sliver can be improved as high as 50% when this system was used on the carding machine and as a result, the higher-quality sliver can be obtained by it.

Key words: carding machine, autoleveller sytem, open loop after machine, displacement method, delay time