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Patent Searching and Data


Title:
CONTROL DEVICE FOR ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2019/138808
Kind Code:
A1
Abstract:
This control device for an electric motor includes a position control unit, a command acceleration calculation unit, a first subtractor, and a second subtractor. The position control unit receives input of a position command signal that designates a target position for a load and an electric motor position signal indicating the position of an electric motor that drives the load and outputs a torque command signal. The command acceleration calculation unit receives input of the position command signal and outputs a command acceleration signal indicating the acceleration of the position command signal. The first subtractor subtracts the command acceleration signal from a load acceleration signal indicating the acceleration of the load and outputs a load acceleration correction signal. The second subtractor subtracts from the torque command signal a value obtained by multiplying the load acceleration correction signal by a prescribed weighting factor and outputs a torque command correction signal. The torque command correction signal controls the current flowing to a stator winding of the electric motor.

Inventors:
FUJIWARA HIROSHI
TAZAWA TORU
Application Number:
PCT/JP2018/046683
Publication Date:
July 18, 2019
Filing Date:
December 19, 2018
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02P29/40; G05D3/12; H02P23/04
Domestic Patent References:
WO2015136696A12015-09-17
Foreign References:
JP2008043132A2008-02-21
JP2006158026A2006-06-15
JPS583001A1983-01-08
JP2016134975A2016-07-25
JPH0691482A1994-04-05
Other References:
See also references of EP 3739748A4
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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