Title:
MOTOR CONTROLLER, SHEET TRANSFER DEVICE, SCRIPT FEEDER, SCRIPT READER AND IMAGE FORMATION DEVICE
Document Type and Number:
Japanese Patent JP2018207733
Kind Code:
A
Abstract:
To solve such a problem that control of a motor becomes unstable, when control of the motor is started based on the initial phase, in a state where the determined initial phase and the actual rotary phase of a rotor are different.SOLUTION: At first, a phase θ_1 is outputted as a command phase θ_ref, thereafter a phase θ_2 is outputted as a command phase θ_ref. As a result, even if a rotor does not rotate when the phase θ_1 is outputted as the command phase θ_ref, rotary phase θ of the rotor becomes the phase θ_2. More specifically, the phase θ_2 can be determined as the initial phase θ0 in motor control.SELECTED DRAWING: Figure 6
Inventors:
OGIWARA TAKESHI
Application Number:
JP2017113619A
Publication Date:
December 27, 2018
Filing Date:
June 08, 2017
Export Citation:
Assignee:
CANON KK
International Classes:
H02P8/04; B41J11/00; G03G21/14; H02P21/06; H04N1/04
Domestic Patent References:
| JP2002291282A | 2002-10-04 | |||
| JP2017077157A | 2017-04-20 | |||
| JPH04261386A | 1992-09-17 | |||
| JP2010226827A | 2010-10-07 | |||
| JPH10511537A | 1998-11-04 | |||
| JP2009284694A | 2009-12-03 |
Attorney, Agent or Firm:
Takuma Abe
Sogo Kuroiwa
Sogo Kuroiwa