Title:
A magnetic bearing device and a vacuum pump
Document Type and Number:
Japanese Patent JP6171375
Kind Code:
B2
Abstract:
A predetermined timing is a timing at which the sampling timing is in a vicinity of a maximum peak position of the carrier wave signal and a timing at which the sampling timing is in a vicinity of a minimum peak position. The demodulation arithmetic section outputs, as the demodulation calculated result, a value d3 calculated with d3=(d1−d2)/2 when a data value of the digital signal sampled in the vicinity of the maximum peak position is denoted by d1 and a data value of the digital signal sampled in the vicinity of the minimum peak position is denoted by d2.
Inventors:
Junichiro Kozaki
Application Number:
JP2013021681A
Publication Date:
August 02, 2017
Filing Date:
February 06, 2013
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
F04D19/04; F16C32/04
Domestic Patent References:
| JP2006308074A | ||||
| JP20112464A | ||||
| JP200060169A | ||||
| JP2001177919A |
Attorney, Agent or Firm:
Fuyuki Nagai