The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2001
Filed:
Apr. 08, 1999
Applicant:
Inventor:
Hirochika Ueyama, Osaka, JP;
Assignee:
Koyo Seiko Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/09 ; F16C 3/204 ;
U.S. Cl.
CPC ...
H02K 7/09 ; F16C 3/204 ;
Abstract
A control magnetic bearing includes a mechanical main unit and a controller for controlling an excitation current supplied to electromagnets. The mechanical main unit comprises displacement sensors and magnetic bearing sets for supporting a rotor in a non-contacting manner. The controller is provided with a digital signal processor (DSP) which outputs a digital control signal for controlling the excitation current on the basis of a digital displacement signal. The DSP includes identification unit for identifying the type of the mechanical main unit. The identification unit identifies the type of the mechanical main unit on the basis of the response by the rotator.