Title:
MOTOR DRIVE CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2024/029456
Kind Code:
A1
Abstract:
The present invention reduces rotation speed fluctuation associated with phase adjustment. A motor drive control device (1) comprises: a control circuit (2) that generates a drive control signal (Sd) which is a PWM signal for controlling drive of a motor (5) having a coil of at least one phase; and a motor drive unit (3) that outputs a drive signal to the motor (5) in accordance with the drive control signal (Sd). The control circuit (2) is provided with: a phase adjustment control unit (20) that determines, on the basis of the phase difference between an induction voltage in a coil of a prescribed phase of the motor (5) and a coil current of the prescribed phase, a phase adjustment amount (S2) obtained by advance control or delay control for the coil current; a PWM duty adjustment unit (30) that determines, in accordance with the phase adjustment amount (S2) determined by the phase adjustment control unit (20), a PWM duty adjustment amount (Sa) for adjusting the PWM duty of a PWM signal; and a drive control signal generation unit (40) that generates the drive control signal (Sd) on the basis of a drive command signal (Sc) from the outside, the phase adjustment amount (S2), and the PWM duty adjustment amount (Sa).
Inventors:
AOKI MASATO (JP)
Application Number:
PCT/JP2023/027725
Publication Date:
February 08, 2024
Filing Date:
July 28, 2023
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
H02P6/10
Foreign References:
| JP2012186876A | 2012-09-27 | |||
| JP2007104768A | 2007-04-19 | |||
| JP2015073388A | 2015-04-16 |
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
Download PDF:
Previous Patent: MOTOR DRIVE CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVE CONTROL METHOD
Next Patent: POLISHING COMPOSITION
Next Patent: POLISHING COMPOSITION