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Title:
MAGNETIC BEARING CONTROL DEVICE AND METHOD
Document Type and Number:
Japanese Patent JP2011075018
Kind Code:
A
Abstract:

To provide a magnetic bearing control device and method capable of stabilizing both of forward spinning components and backward spinning components, and capable of increasing attenuation in a plurality of frequency bands.

The magnetic bearing control device includes a feedback controller 32 holding a rotor at a neutral position based on displacement X, Y of the rotor, F cross control filters 36A and 36B extracting only a forward spinning displacement signal of the rotor coincident with a forward spinning target frequency band including a target frequency Nf and set in advance, a B cross control filter 37 extracting only a backward spinning displacement signal of the rotor coincident with a backward spinning target frequency band including a target frequency Nb and set in advance, and cross circuits 38A-38C multiplying the extracted input signal of an x-axis by a predetermined gain k, superimposing the product on a current command signal Iy of a y-axis electromagnet, multiplying the extracted input signal of a y-axis by the predetermined gain k and superimposing the product on a current command signal Ix of an x-axis electromagnet.


Inventors:
Kuwata, Gen
Application Number:
JP2009000226902
Publication Date:
April 14, 2011
Filing Date:
September 30, 2009
Export Citation:
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Assignee:
IHI CORP
International Classes:
F16C32/04
Domestic Patent References:
1994-10-25
1989-08-18