发明公开
- 专利标题: Magnetic levitation control apparatus
- 专利标题(中): 磁悬浮控制装置
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申请号: EP00122022.7申请日: 2000-10-10
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公开(公告)号: EP1109305A3公开(公告)日: 2003-11-19
- 发明人: Moriyama, Shinichi , Watanabe, Katsuhide , Haga, Takahide
- 申请人: EBARA CORPORATION
- 申请人地址: 11-1, Haneda Asahi-cho Ohta-ku, Tokyo JP
- 专利权人: EBARA CORPORATION
- 当前专利权人: EBARA CORPORATION
- 当前专利权人地址: 11-1, Haneda Asahi-cho Ohta-ku, Tokyo JP
- 代理机构: Geyer, Ulrich F., Dr. Dipl.-Phys.
- 优先权: JP35369499 19991213
- 主分类号: H02N15/00
- IPC分类号: H02N15/00
摘要:
A magnetic levitation control apparatus comprises a pair of electromagnets for holding a levitated body having a magnetic body in the levitated state. A signal source for supplying a voltage signal of a frequency on a level such that enables the electromagnets to function as the position sensor, wherein a control voltage signal for controlling the magnetic attraction of the electromagnets is superimposed on the voltage signal. A circuit differentially supplies the voltage signal to the pair of electromagnets to form a position signal of the levitated body from an add signal of currents respectively from the electromagnets, and a circuit detects a control current of the electromagnets from a subtraction signal of currents respectively from the electromagnets. A controller generates a control voltage signal of the electromagnets from the detected position signal of the levitated body and, in addition, corrects the position signal detected from the detected control current of the electromagnets.
公开/授权文献
- EP1109305A2 Magnetic levitation control apparatus 公开/授权日:2001-06-20
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