Title:
制御形磁気軸受装置
Document Type and Number:
Japanese Patent JP4036567
Kind Code:
B2
Abstract:
The present invention provides a controlled magnetic bearing apparatus which generates a control signal based on a sensor signal from a displacement sensor for detecting a radial displacement of a rotor to suppress whirling of the rotor due to an external force synchronized with a rotational movement, and can hence support the rotor stably in a levitated state. A controlled magnetic bearing apparatus comprises a displacement sensor for detecting a radial displacement of the rotor, a first control unit for calculating a first control signal based on a sensor signal from the displacement sensor and outputting the first control signal, a second control unit disposed in parallel with the first control unit for generating a second control signal changed in phase from the sensor signal inputted therein and outputting the second control signal, a signal synthesizer for adding the second control signal outputted from the second control unit to the first control signal outputted from the first control unit to generate a control signal and outputting the control signal to the power amplifier, a power amplifier for supplying an electric current based on the control signal, and an electromagnet for generating a magnetic force based on a signal from the power amplifier.
Inventors:
Hiroyuki Shinozaki
Application Number:
JP14470199A
Publication Date:
January 23, 2008
Filing Date:
May 25, 1999
Export Citation:
Assignee:
Ebara Corporation
International Classes:
F16C32/04; F16C39/06
Domestic Patent References:
| JP9236122A | ||||
| JP59212519A |
Attorney, Agent or Firm:
Isamu Watanabe
Shintaro Hotta
Susumu Ohata
Shintaro Hotta
Susumu Ohata