Title:
HOISTING MACHINE MOTOR CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/261060
Kind Code:
A1
Abstract:
The present invention prevents car tilting caused by differences in sheave diameter, and the like from accumulating with operation. A hoisting machine motor control system for an elevator having at least two hoisting machines installed in the path that a car is moving along, the hoisting machine motor control system comprising: a first speed controller that receives the deviation between a first rope feed speed and a speed command value and outputs a first torque command value; a second speed controller that receives the deviation between a second rope feed speed and a speed command value and outputs a second torque command value; a first current controller that controls a first motor current value supplied to the motor of a first hoisting machine according to the first torque command value; a second current controller that controls a second motor current value supplied to the motor of a second hoisting machine according to the second torque command value; and a feedback element. The feedback element inputs the difference between the first torque command value and the second torque command value to the first speed controller and the second speed controller.
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Inventors:
SHIMURA ITSUKI (JP)
ARAKAWA ATSUSHI (JP)
ARAKAWA ATSUSHI (JP)
Application Number:
PCT/JP2021/015716
Publication Date:
December 30, 2021
Filing Date:
April 16, 2021
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
B66B11/08; B66B1/30; B66B9/10
Domestic Patent References:
| WO2019186788A1 | 2019-10-03 | |||
| WO2017010929A1 | 2017-01-19 |
Foreign References:
| JP2019043749A | 2019-03-22 | |||
| JP2020019600A | 2020-02-06 | |||
| JPH11335037A | 1999-12-07 | |||
| JP2009221009A | 2009-10-01 | |||
| JP2004051250A | 2004-02-19 |
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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