Title:
CONTROL DEVICE FOR ACTUATOR
Document Type and Number:
Japanese Patent JP2014124000
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To control driving of an actuator with high accuracy.SOLUTION: There is provided a control device including: a memory for storing correction information set for each of rotational positions of a sensor magnet of a rotary encoder having the sensor magnet which is attached to a rotational shaft of a stepping motor 103 and formed with pattern strings corresponding to the rotational positions, and a Hall IC 104 for detecting the pattern strings of the sensor magnet; and a lens CPU 102 for correcting the output of the Hall IC by using the correction information stored in the memory and performing driving control of the stepping motor on the basis of the corrected information.
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Inventors:
YOSHIMUTA JUNKI
Application Number:
JP2012277584A
Publication Date:
July 03, 2014
Filing Date:
December 20, 2012
Export Citation:
Assignee:
CANON KK
International Classes:
H02P8/00; G01D5/244; G01D5/347; G01D5/36
Domestic Patent References:
| JP2009069031A | 2009-04-02 | |||
| JP2009198427A | 2009-09-03 | |||
| JP2007228774A | 2007-09-06 | |||
| JP2007166735A | 2007-06-28 |
Foreign References:
| EP2389004A1 | 2011-11-23 |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya
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