Title:
ELEVATOR CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2004/050523
Kind Code:
A1
Abstract:
An elevator control system for an elevator comprising an electric motor moving a car by rotating a pulley having a main rope for suspending the car and a balance weight wound thereon, a control device for driving the electric motor, an electromagnetic brake for stopping and stationarily holding the car, and an encoder for detecting the rotation of the electric motor, wherein the control device drivingly controls the electric motor so that a torque stopping the rotation of the electric motor can be developed when the car starts to move slightly due to insufficient stationary holding force of the electromagnetic brake while the electromagnetic brake is being operated in such a state that the car stops at a platform and the door of the car for the access of passengers thereto is opened and the rotating angle of the electric motor is detected by the encoder.
Inventors:
ABE SHIGERU (JP)
KARIYA YOSHITAKA (JP)
KARIYA YOSHITAKA (JP)
Application Number:
PCT/JP2002/012537
Publication Date:
June 17, 2004
Filing Date:
November 29, 2002
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
ABE SHIGERU (JP)
KARIYA YOSHITAKA (JP)
ABE SHIGERU (JP)
KARIYA YOSHITAKA (JP)
International Classes:
B66B1/32; B66B1/44; B66B5/02; (IPC1-7): B66B1/32; B66B1/44; B66B5/02
Foreign References:
| JPH0640677A | 1994-02-15 | |||
| JPH11199153A | 1999-07-27 | |||
| JPH09221285A | 1997-08-26 | |||
| JPH01247383A | 1989-10-03 | |||
| JPS6186380A | 1986-05-01 |
Attorney, Agent or Firm:
Soga, Michiteru (8th Floor Kokusai Building, 1-1, Marunouchi 3-chom, Chiyoda-ku Tokyo, JP)
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