Title:
モータ制御装置、該モータ制御装置を備えるシステム並びに光学機器、およびモータ制御方法
Document Type and Number:
Japanese Patent JP6486511
Kind Code:
B2
Abstract:
A motor control apparatus applying a sinusoidal drive waveform to a motor and including a position detection unit outputting a signal according to a motor shaft's position; and a control unit: acquiring a phase value of the motor's drive waveform when a signal is output by the position detection unit, changing a cycle of the drive waveform by measuring time from a previously output signal to a presently output signal, comparing the phases of the drive waveform and the motor shaft, and controlling to change to a cycle at which a phase value of the drive waveform matches a target phase value when a travel time corresponding to a phase value for adjustment has elapsed from a present time when a phase value of the drive waveform presently acquired differs from a target phase value acquired when the motor's drive current and drive voltage are in a designated phase relationship.
Inventors:
Yoshihiro Mizuo
Application Number:
JP2018005427A
Publication Date:
March 20, 2019
Filing Date:
January 17, 2018
Export Citation:
Assignee:
Canon Inc
International Classes:
H02P8/18; H02P8/38; H02P6/00; H02P6/08; H02P8/34
Domestic Patent References:
| JP2002325480A |
Foreign References:
| US20080012522 |
Attorney, Agent or Firm:
Ryoichi Takaoka
Nao Oda
Nao Oda