Title:
MOTOR CONTROL DEVICE AND METHOD FOR CONTROLLING MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/014249
Kind Code:
A1
Abstract:
Disclosed is a motor control device that detects abnormalities of a motor or of a machine corresponding to the load of the motor, and thus is effective in protecting the motor or machine. Further disclosed is a method for controlling same. The device compares a second torque value and a motor velocity detected from the motor while the motor is running to a lower bound and an upper bound of a torque tolerance determined from a third torque value. As a result, when the abovementioned third torque value falls outside of the abovementioned lower bound or upper bound of the torque tolerance, the motor is halted in accordance with the difference between the abovementioned third torque and the torque tolerance. As a result of the above, in all velocity ranges of the motor including a low-velocity region, abnormalities of the motor are rapidly and accurately detected and the device is effective in protecting the motor or the machine corresponding to the load of the motor.
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Inventors:
NOGUCHI TOMOHIRO (JP)
KAITANI TOSHIYUKI (JP)
KAITANI TOSHIYUKI (JP)
Application Number:
PCT/JP2010/004740
Publication Date:
February 02, 2012
Filing Date:
July 26, 2010
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NOGUCHI TOMOHIRO (JP)
KAITANI TOSHIYUKI (JP)
NOGUCHI TOMOHIRO (JP)
KAITANI TOSHIYUKI (JP)
International Classes:
H02P29/00
Foreign References:
| JPH112669A | 1999-01-06 | |||
| JP2004350387A | 2004-12-09 |
Attorney, Agent or Firm:
TAKAHASHI, Shogo et al. (JP)
Shogo Takahashi (JP)
Shogo Takahashi (JP)
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Claims:
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