Patent ID: 11962258
Assignee: SKF MAGNETIC MECHATRONICS
Field: Mechanical elements (Mechanical engineering)
Classification: CPC H  F  G | IPC H

Claim 0:
1. A method for estimating the temperature of a stator coil of a magnetic suspension bearing of a rotor and which is connected by connection wires to circuits for servo-controlling the position of the rotor, comprising:
measuring the electric voltage at the terminals of the connection wires of the stator coil wherein the measuring of the electric voltage comprises sampling a plurality of signals to determine so as to increase the accuracy of the electric voltage measurement without using a dedicate voltage measurement circuit;
measuring the intensity of the current passing through the stator coil;
estimating the electric resistance of the stator coil and of the connection wires based on an adaptive filter, the measured electric voltage and the intensity of the measured current; and, estimating the temperature of the coil based on the value of the estimated resistance.