Title:
磁気浮上型ポンプ装置
Document Type and Number:
Japanese Patent JP5025707
Kind Code:
B2
Abstract:
To provide a magnetic levitation pump device for achieving highly accurate measurement of positional information on an impeller in a pump chamber and stable magnetic levitation of the impeller.
This magnetic levitation pump device 1 controls an electric current Im of an electromagnet 31 based on an output signal of a magnetic sensor 222 arranged in close vicinity to the electromagnet 31 for a magnetic bearing, and limits an upper limit value of output of a PID compensator 224 by a limit circuit 210. Thus, a maximum value of a drift in sensor output can be limited, and accurate positional information on the impeller 23 can be provided.
COPYRIGHT: (C)2010,JPO&INPIT
Inventors:
Takami Ozaki
Kenichi Suzuki
Kenichi Suzuki
Application Number:
JP2009244400A
Publication Date:
September 12, 2012
Filing Date:
October 23, 2009
Export Citation:
Assignee:
ntn corporation
Terumo Corporation
Terumo Corporation
International Classes:
F04D13/02; A61M1/10; F04D29/048; F16C32/04
Domestic Patent References:
| JP2002180986A | ||||
| JP2001032833A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Masayuki Sakai
Nobuo Arakawa
Masato Sasaki
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Masayuki Sakai
Nobuo Arakawa
Masato Sasaki