Title:
駆動装置
Document Type and Number:
Japanese Patent JP5656354
Kind Code:
B2
Abstract:
A drive apparatus includes a magnet rotor, a stator having a coil, a position detector configured to detect a position of the magnet rotor, a lead angle circuit configured to output a signal having a lead angle relative to an output of the position detector, a first driver configured to switch an electrification state of the coil in accordance with a preset time interval, a second driver configured to switch an electrification state of the coil in accordance with an output of the lead angle circuit, and a controller configured to adjust a lead angle amount of the signal output from the lead angle circuit within a range that does not cause step out in the driving by the first driver, prior to changing the driving by the second driver to the driving by the first driver.
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Inventors:
木矢村 公介
Application Number:
JP2008270364A
Publication Date:
January 21, 2015
Filing Date:
October 20, 2008
Export Citation:
Assignee:
キヤノン株式会社
International Classes:
H02P29/00; H02P8/38
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsuya Mizumoto
Atsuya Mizumoto