Title:
【発明の名称】浮上式搬送装置
Document Type and Number:
Japanese Patent JP2967822
Kind Code:
B2
Abstract:
PURPOSE:To alleviate the load of a power source by controlling an exciting current flowed to an electromagnet so that the normal value becomes zero irrespective of an external force applied to a conveying vehicle. CONSTITUTION:A conveying vehicle 22 levitates on a guide rail 22 by a magnetic attraction force produced between a magnetic supporting unit 23 placed on the vehicle 22 and a guide rail 21. A linear induction motor 25 is composed of a conductor plate 26 secured through a support plate 24 to the lower surface of the vehicle 22 and a stator 28 secured to a base. The unit 23 has electromagnetic coils 38, 39 and a permanent magnet 40. A controller controls to flow the exciting currents of the magnets 38, 39 in transient state on the basis of the outputs of a gap sensor 51 and a current detector or to become zero irrespective of the presence of the external force in the normal state.
Inventors:
MORISHITA AKIHIRA
AZUSAWA TERUO
AZUSAWA TERUO
Application Number:
JP22270284A
Publication Date:
October 25, 1999
Filing Date:
October 23, 1984
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
B60L13/06; B65G54/02; H02K41/02; (IPC1-7): B60L13/06; B65G54/02; H02K41/02
Domestic Patent References:
| JP521531B2 |
Other References:
【文献】「航空宇宙技術研究所資料、TM-388]航空宇宙技術研究所発行(1979.8)P.9~12
Attorney, Agent or Firm:
Hideaki Tokawa (1 outside)