Title:
磁気軸受制御装置
Document Type and Number:
Japanese Patent JP4324736
Kind Code:
B2
Abstract:
A magnetic bearing control device includes a rotation speed sensor for detecting a rotational speed of a rotating member supported on an axial magnetic bearing and a radial magnetic bearing without contact, and a displacement sensor for detecting an axial displacement of the rotating member. A control unit outputs a control signal of the axial magnetic bearing based on a signal from the displacement sensor. A filter unit reduces a signal with a specific frequency from the control signal output from the control unit, and passes a remaining signal, and a driving unit drives the axial magnetic bearing based on the signal output from the filter unit. The filter unit includes several notch filters with different ranges of the specific frequencies, and a selection device for selecting at least one of the notch filters according to the rotational speed.
Inventors:
Masato Ofuji
Junichiro Kozaki
Junichiro Kozaki
Application Number:
JP2004146775A
Publication Date:
September 02, 2009
Filing Date:
May 17, 2004
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
F04D19/04; F16C32/04; F16C39/06
Domestic Patent References:
| JP2056914U | ||||
| JP10239422A | ||||
| JP2002130275A | ||||
| JP10082419A | ||||
| JP2002122140A | ||||
| JP4203524A | ||||
| JP5141422A |
Attorney, Agent or Firm:
Fuyuki Nagai