Title:
MOTOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/027527
Kind Code:
A1
Abstract:
Provided are a motor control device that stably drives a motor regardless of the stop position and even in the event of fluctuations of load characteristics, and a drive device that utilizes said motor control device. This motor control device has a synchronous operation mode that does not utilize any rotational angular position information and a position sensorless operation mode that utilizes rotational angular position information for driving, and switches between the operation modes during the driving. The motor control device is characterized by being provided with a means for estimating a cyclic torque component, which fluctuates at one mechanical radian cycle or at a cycle equal to an integral multiple of the one mechanical radian cycle, in order to switch between the operation modes during a period in which the cyclic torque ramp becomes close to zero or negative.
Inventors:
SUZUKI TAKAHIRO (JP)
SHIMIZU YUICHI (JP)
SHIMIZU YUICHI (JP)
Application Number:
PCT/JP2012/068767
Publication Date:
February 28, 2013
Filing Date:
July 25, 2012
Export Citation:
Assignee:
HITACHI APPLIANCES INC (JP)
SUZUKI TAKAHIRO (JP)
SHIMIZU YUICHI (JP)
SUZUKI TAKAHIRO (JP)
SHIMIZU YUICHI (JP)
International Classes:
H02P6/10; H02P6/06; H02P6/08; H02P6/17; H02P6/18; H02P6/182; H02P6/28; H02P21/00; H02P21/05; H02P21/06; H02P21/14; H02P21/18; H02P21/22; H02P21/24; H02P21/26; H02P21/28; H02P21/34; H02P23/04; H02P23/14; H02P23/16; H02P27/06; H02P27/08
Foreign References:
| JP2005057922A | 2005-03-03 | |||
| JP2009284682A | 2009-12-03 | |||
| JP2001054295A | 2001-02-23 | |||
| JPH05219784A | 1993-08-27 | |||
| JP2000287483A | 2000-10-13 | |||
| JP2006042419A | 2006-02-09 |
Attorney, Agent or Firm:
POLAIRE I. P. C. (JP)
Polaire Intellectual Property Corporation (JP)
Polaire Intellectual Property Corporation (JP)
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Claims:
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