Title:
CONTROL SYSTEM FOR ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2006/006229
Kind Code:
A1
Abstract:
A control system for an elevator, capable of performing speed control while balancing rope tension applied to two hoists. The control system for an elevator has two hoists, two ropes put on the two hoists, an elevator car engaged to one end of each of the two ropes, balance weights each engaged to the other end of each of the two ropes, and a drive controller for driving the two hoists. The control system further has tension detectors for detecting tension in each of the two ropes and has a compensator for controlling the rotational speed of the hoists to balance tension in the ropes, the compensator performing the control by outputting a feedback signal to the drive controller depending on the difference in tension in the two ropes detected by the detectors.
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Inventors:
YASUE MASANORI (JP)
Application Number:
PCT/JP2004/009918
Publication Date:
January 19, 2006
Filing Date:
July 12, 2004
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
YASUE MASANORI (JP)
YASUE MASANORI (JP)
International Classes:
B66B1/06; (IPC1-7): B66B1/06
Domestic Patent References:
| WO1999043593A1 | 1999-09-02 |
Foreign References:
| JP2002504471A | 2002-02-12 | |||
| JPS62205973A | 1987-09-10 | |||
| JPS5922867A | 1984-02-06 | |||
| JPH0725553A | 1995-01-27 | |||
| JPH0664863A | 1994-03-08 |
Other References:
See also references of EP 1767483A4
Attorney, Agent or Firm:
Soga, Michiteru (8th Floor Kokusai Building 1-1, Marunouchi
3-chome, Chiyoda-k, Tokyo 05, JP)
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