Patent ID: 9689658
Date: 2017-06-27
CPC Classifications: D01H,F16C,G01B

Claim:
1. A method for detecting changes of position of a shaftless spinning rotor of an open-end spinning machine in a cavity of an active magnetic bearing, in which the position of the spinning rotor is detected by a system of sensors and based on detected changes in the position of the spinning rotor, controlling of the active magnetic bearing is adjusted in order to eliminate undesirable changes in the position of the spinning rotor in the cavity of the active magnetic bearing, wherein radial shifting of the spinning rotor and simultaneously inclination of the spinning rotor are continuously detected, according to the detected changes in the position of the spinning rotor is determined shifting and/or inclination of the spinning rotor which is used for subsequent adjustment of the controlling of position of the spinning rotor in the active magnetic bearing both radial shifting and inclination of the spinning rotor are each detected by at least two pairs of sensors of the distance of monitored surface of the spinning rotor, wherein two pairs of interconnected sensors for detecting radial shifting of the spinning rotor detect changes of distances of a cylindrical outer wall of the spinning rotor from the sensors, and wherein another two pairs of interconnected sensors for detecting inclination of the spinning rotor detect a change of the distances of an annular top wall of the spinning rotor, which is perpendicular to the rotation axis of the spinning rotor, from the sensors arranged against said annular top wall.