A Magnetic Journal Bearing
スポンサーリンク
概要
- 論文の詳細を見る
This report is related to the development of a magnetic journal bearing which can support a rotating shaft without any mechanical contact. A complete levitation is successfully achieved by means of a combination of permanent magnets and servo-controlled electromagnets. The principle and the characteristics of this bearing are as follows. The greater part of the rotor weight is supported by repulsion forces of like-poles of permanent magnets (barium ferrite) which are magnetized in the axial direction. Therefore, as indicated by the Earnshaw's theorem, there appears a strong unbalance force, but this can be prevented by attractive forces of direct current electromagnets which are servo-controlled. Owing to the use of the two control circuits which drive the two electromagents independently, the influence of current drifts of electromagnets upon the stability is made extremely low. The brake torque induced by eddy currents is made negligibly small by the use of ferrite.
- 一般社団法人日本機械学会の論文
著者
-
Taniguchi Osamu
Tokyo Institute Of Technology
-
Taniguchi Osamu
Tokyo Institute Of Technology.
-
SHIMIZU Hisaji
Department of Control Engineering, Tokyo Institute of Technology
-
Shimizu Hisaji
Department Of Control Engineering Tokyo Institute Of Technology
関連論文
- Flexural Vibrations of a Ring
- A Magnetic Journal Bearing
- Research on the Control Systems of Magnetic Bearing
- Study on the Improvement of Reliability of Inspection Systems Using Kalman Filter : Development of Leakage Tester for Tanks and Balancing Tester for Rotary Machinery
- Research on the Self-Exciting Vibration of Thrust-Type Magnetic Bearing : Cylindrical Mode
- An Exploratory Study of a Magnetic Bearing Using Superconductive Magnets
- Machine Fault Diagnosis by Vibrational Analysis : Exploratory Introduction of Bispectrum Method
- Fundamental Researches on Vibrational Characteristics of Damaged Pipelines : Prediction Method of Machine Component Failures
- On the Subharmonic Vibration of the Order One-half Caused by Passing Balls in a Ball Bearing
- Hot Spin Tester
- On the Axial Harmonic Vibration Caused by Passing Balls in a Ball Bearing
- On the Nonlinear Vibrations in Axial Direction of a Ball Bearing
- On the Steady State Motion of Electro-Magnetic Vibrator