Title:
磁気軸受装置
Document Type and Number:
Japanese Patent JP4241223
Kind Code:
B2
Abstract:
A magnetic bearing device includes an electromagnet for supporting a member without contact; an excitation amplifier for supplying an excitation current to the electromagnet; a carrier wave generation device for generating a carrier wave; and a sensor device for modulating the carrier wave to output a sensor signal according to a position of the member. An A/D conversion device converts the sensor signal to a digital value, and a demodulation calculation device demodulates through a digital calculation process according to the sensor signal converted to the digital value. A control device controls the excitation amplifier according to a calculation result of the demodulation calculation device.
Inventors:
Junichiro Kozaki
Application Number:
JP2003190842A
Publication Date:
March 18, 2009
Filing Date:
July 03, 2003
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
F16C32/04; F16C39/06; G01B7/14; G01B7/30; G01R33/00
Domestic Patent References:
| JP2001132747A | ||||
| JP2001177919A | ||||
| JP9177781A | ||||
| JP10299773A | ||||
| JP11094589A | ||||
| JP8028563A | ||||
| JP2001336528A | ||||
| JP6313426A |
Attorney, Agent or Firm:
Fuyuki Nagai