Title:
MOTOR DRIVE DEVICE AND MOTOR DRIVE METHOD
Document Type and Number:
Japanese Patent JP2019047722
Kind Code:
A
Abstract:
To hinder reverse rotation movement of a motor in a case where vibration occurs due disturbance and so on, by allowing generation of a drive waveform less in terms of reaction delay, in a motor drive device that forms an efficient drive waveform on the basis of a rotation detecting position.SOLUTION: A motor drive device detects a rotating position of a rotor and an Apos generating section 301 and a Bpos generating section 302 perform a position encoding process. A drive waveform phase determining section 303 determines a drive-waveform phase to a motor. According to a signal generated by a PWM generator 112, a rotating-position phase and the drive-waveform phase are synchronously controlled. During the synchronization, a phase-difference setting process is performed for holding a predetermined phase difference between the rotating-position phase and the drive-waveform phase. In a case where the direction in which the detected rotating direction changes and a set rotating direction do not match, control for hindering reverse rotation to the set rotation is exerted according to setting by a rotating-direction fixing function setting section 307.SELECTED DRAWING: Figure 3
Inventors:
HORIE NOBUYUKI
MIZUO YOSHIHIRO
MIZUO YOSHIHIRO
Application Number:
JP2018164624A
Publication Date:
March 22, 2019
Filing Date:
September 03, 2018
Export Citation:
Assignee:
CANON KK
International Classes:
H02P8/34; G01D5/244; H02P29/02
Domestic Patent References:
| JP2002359997A | 2002-12-13 | |||
| JPH08172793A | 1996-07-02 | |||
| JP2009244022A | 2009-10-22 | |||
| JP2014039428A | 2014-02-27 | |||
| JP2007336640A | 2007-12-27 | |||
| JP2000299997A | 2000-10-24 |
Attorney, Agent or Firm:
Ryoichi Takaoka
Nao Oda
Nao Oda