Patent ID: 6215218
Filing Date: 2001-04-10
Classification: F16C

Abstract:
A control magnetic bearing comprising:a mechanical main unit;a rotator coupled to said mechanical main unit;a plurality of displacement sensors within said mechanical main unit for detecting displacement of said rotator;a plurality of sets of magnetic bearings for supporting the rotator in a predetermined target position in a non-contacting manner using attractive magnetic forces generated by pairs of electromagnets, each pair of the electromagnets forming each set of the magnetic bearings; anda controller having electromagnet control means for controlling an excitation current supplied to the electromagnets on the basis of signals output from the displacement sensors,wherein the electromagnet control means has digital processing means which is programmable by software and outputs a digital control signal for controlling the excitation current on the basis of the digital displacement signal that is calculated from the signals output from the displacement sensors and that represents the displacement of the rotator, andwherein the digital processing means has identification means for identifying the type of the mechanical main unit based on a response by said rotator.