MAGNETIC BEARING SYSTEM CONTROL METHOD, CONTROL DEVICE AND AIR CONDITIONER

WIPO Patent Application WO/2015/188669

A1

A magnetic bearing system control method, comprising: obtaining a displacement signal of a rotor in a magnetic bearing system; determining in the displacement signal a sinusoidal component at the same frequency with the rotational speed; compensating the displacement signal with a compensation signal, the compensation signal being a product of the sinusoidal component and an optimal vortex motion separation weighted coefficient; generating a control signal based on the current compensated displacement signal so as to control a power amplifier to adjust the exciting current flowing through the bearing coil in the magnetic bearing. The control method can reduce control signal fluctuation and improve the levitation precision and stability of a rotor. In addition, the present invention also relates to a corresponding control device and air conditioner.

JP6113698	Surfacing power generator
WO/1997/031823	PASSIVE NON-CONTACTING CENTERING SYSTEM
JPS61278913	MAGNETIC FLOATING-TYPE POSITIONING DEVICE

HUANG HUI (CN)
HU YUSHENG (CN)
LI YAN (CN)
GUO WEILIN (CN)
HU DAOFU (CN)
HE YONGLING (CN)

PCT/CN2015/078539

December 17, 2015

May 08, 2015

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GREE ELECTRIC APPLIANCES INC (CN)

H02N15/00; F16C39/06

US5400256A	1995-03-21
CN1928489A	2007-03-14
US20130251502A1	2013-09-26
JP4232573B2	2009-03-04
CN101488031A	2009-07-22
CN102664566A	2012-09-12
CN103671223A	2014-03-26

UNITALEN ATTORNEYS AT LAW (CN)
北京集佳知识产权代理有限公司 (CN)

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