Title:
MAGNETIC BEARING CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3701115
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a magnetic bearing control device that can stably float a controlled object with magnetic force even when frequency used by a state detector is reduced.
SOLUTION: This control device is equipped with an electromagnet 21 as a magnetic force generating source, a power amplifier 14 for supplying control current whose pulse width is modulated by the electromagnet, a signal amplifier 13 for amplifying signals inputted into the power amplifier, a state detector for detecting a state of an object controlled by magnetic force of the electromagnet. In this case, a removing device 30 for removing a signal component of a frequency band region used in the state detector is provided between the signal amplifier 13 and the power amplifier 14.
Inventors:
Hiroyuki Shinozaki
Application Number:
JP4629698A
Publication Date:
September 28, 2005
Filing Date:
February 12, 1998
Export Citation:
Assignee:
Ebara Corporation
International Classes:
F16C32/04; F16C39/06; (IPC1-7): F16C32/04
Domestic Patent References:
| JP61066540A | ||||
| JP5149338A | ||||
| JP10026137A | ||||
| JP62258221A | ||||
| JP63275814A | ||||
| JP64021214A | ||||
| JP5231428A | ||||
| JP1150015A | ||||
| JP5118329A | ||||
| JP59212519A |
Foreign References:
| US5708312 |
Attorney, Agent or Firm:
Isamu Watanabe
Shintaro Hotta
Susumu Ohata
Shintaro Hotta
Susumu Ohata