Title:
CONTROL APPARATUS AND CONTROL METHOD OF ACTUATOR
Document Type and Number:
Japanese Patent JP2015023700
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To comparatively simply perform stable feedback control.SOLUTION: A control apparatus of an actuator includes a Hall sensor 118 for outputting a signal corresponding to a rotational position of a stepping motor 114 and a lens CPU 120 for controlling the actuator. When it is defined that a driving speed when a vibration quantity of the stepping motor 114 exceeds a peak and is reduced to a predetermined quantity in acceleration of the stepping motor 114 is defined as a threshold speed, the lens CPU controls the stepping motor by open loop control when the driving speed of the stepping motor is less than the threshold speed, and when the driving speed exceeds the threshold speed, controls the stepping motor by advance angle control based on a signal outputted from an encoder.
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Inventors:
KAWADA KAZUTOSHI
Application Number:
JP2013150730A
Publication Date:
February 02, 2015
Filing Date:
July 19, 2013
Export Citation:
Assignee:
CANON KK
International Classes:
H02P8/00
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Michiya Hirayama
Atsuya Mizumoto
Michiya Hirayama