Title:
BRAKE CONTROLLER OF ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2004/028945
Kind Code:
A1
Abstract:
A brake controller of an elevator comprising a section for estimating the electromotive force of an electromagnet caused by the moving speed of an armature being attracted to the brake coil of the electromagnet for driving the brake shoe of an elevator brake, and a section for supplying the electromagnet with a voltage command compensated such that any one of the electromotive force and the integrated value thereof matches a target value, wherein brake noise made when the brake shoe runs against a brake drum is reduced by controlling the brake coil voltage to suppress the moving speed of the armature after movement of the armature is started at the time of brake operation.
Inventors:
UEDA TAKAHARU
FORRAI ALEXANDRU
KARIYA YOSHITAKA
FORRAI ALEXANDRU
KARIYA YOSHITAKA
Application Number:
PCT/JP2003/001385
Publication Date:
April 08, 2004
Filing Date:
February 10, 2003
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B66B1/32; (IPC1-7): B66B1/32
Foreign References:
| JP2000509357A | 2000-07-25 | |||
| JPH09267982A | 1997-10-14 | |||
| JP2003083372A | 2003-03-19 |
Other References:
See also references of EP 1544148A4
Attorney, Agent or Firm:
Soga, Michiteru (8th Floor Kokusai Building, 1-1, Marunouchi 3-chom, Chiyoda-ku Tokyo, JP)
Download PDF: