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Title:
MOTOR CONTROL DEVICE AND METHOD FOR CONTROLLING MOTOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2019170056
Kind Code:
A
Abstract:
To provide a motor control device capable of reducing the distance until a servomotor stops.SOLUTION: A motor control device 10 for controlling a servomotor 20 for axially moving a movement object 15 is provided with: a speed detection section 19 for detecting a moving speed of the movement object 15; an abnormality detection section 22 for detecting an abnormality of the speed detection section 19; a motor control section 30 for speed-reduction controlling the servomotor 20 to reduce the speed of the movement object 15 when an abnormality is detected; a normative speed generating section 24 for generating a normative speed that reduces as time passes on the basis of a moving speed when the movement object 15 reduces the speed and a predetermined speed-reduction acceleration; a speed monitoring section 26 for monitoring a moving speed and determining whether or not the moving speed is the normative speed or more; and a brake control section 28 for actuating a brake 36 for braking the axial movement of the movement object 15 when the movement speed is determined to be a normative speed or more.SELECTED DRAWING: Figure 1

Inventors:
TSUNEKI RYOTARO
IGAI SATOSHI
Application Number:
JP2018055669A
Publication Date:
October 03, 2019
Filing Date:
March 23, 2018
Export Citation:
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Assignee:
FANUC LTD
International Classes:
H02P29/024; G05B19/19; H02P3/06
Domestic Patent References:
JP2005199314A2005-07-28
JP2011067017A2011-03-31
JP2005130673A2005-05-19
Foreign References:
WO2012043116A12012-04-05
US20060022624A12006-02-02
WO2015137040A12015-09-17
Attorney, Agent or Firm:
Takehiro Chiba
Toshiyuki Miyadera
Takayuki Chima
Shuji Ouchi
Yasuharu Nakasone
Shiro Sakai
Toru Sekiguchi