Patent ID: 6430781
Filing Date: 2002-08-13
Classification: D01H

Abstract:
In a method of directly determining setting values for an application point of regulation in a draw unit for drafting sliver; the method including the steps ofobtaining a plurality of measured values of a quality-characterizing magnitude of the drafted sliver; utilizing the measured values for formulating a function having a minimum constituting an optimal application point of regulation for controlling the draw unit; determining the optimal application point of regulation in a pre-operational run of the draw unit; the improvement comprising the steps of obtaining measured values of at least two quality-characterizing magnitudes based on a drafted sliver portion; combining values of the quality-characterizing magnitudes at the sliver, which correspond to one another with respect to the application point of regulation, to a quality-characterizing number QK, and forming a function based on several numbers QK; said function having a minimum corresponding to an optimal application point of regulation Ropt.