Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Toshiya Yoshida0
Toshimitsu Barada0
Date of Patent
May 17, 2011
0Patent Application Number
123591200
Date Filed
January 23, 2009
0Patent Primary Examiner
Patent abstract
A magnetic bearing apparatus supports a rotating object using magnetic levitation by a magnetic force of electromagnets. The magnetic bearing apparatus includes a PWM driver configured to supply exciting currents to the electromagnets, a driver power source configured to drive the PWM driver, and a displacement error signal removing section configured to extract a displacement error signal of the displacement information from a current flowing through the driver power source and to remove the displacement error signal from the displacement information.
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