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Title:
MOTOR CONTROLLER
Document Type and Number:
Japanese Patent JP2015116016
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a motor controller capable of effectively controlling a rotation stop position of the output shaft of a motor while suppressing the load of arithmetic processing.SOLUTION: A first rotating speed v*1 and a second rotating speed v*2 of a DC motor are detected at two points ta, tc of time as a detection point ta of time when a form sensor detects the front end of a form and as a speed detection point tc of time which is a predetermined "t" after a point tb of time when stop control over a DC motor 4 starts, and the stop control over the DC motor is maintained or changed according to the result of a comparison of the difference between those rotating speeds v*1, v*2 with a threshold α, so that even if load variation of the DC motor occurs, the front end of the form stops at a target stop position and the load of arithmetic processing is suppressed to be low.

Inventors:
YAMAZAKI SHINICHI
Application Number:
JP2013255384A
Publication Date:
June 22, 2015
Filing Date:
December 10, 2013
Export Citation:
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Assignee:
SHARP KK
International Classes:
H02P3/08; H02P3/04
Attorney, Agent or Firm:
特許業務法人あーく特許事務所



 
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