Title:
MOTOR DRIVING CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVING CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/100549
Kind Code:
A1
Abstract:
The present invention improves operation stability when the driving of a stepping motor starts. A motor driving control device (10) comprises: a control unit (11) that generates a control signal (Sd) for controlling the driving of a two-phase stepping motor (20); and a driving unit (12) that drives coils of two phases in the two-phase stepping motor (20) on the basis of the control signal (Sd). The control unit (11) has, as control modes, a first commutation control mode in which the commutation of the coils is carried out according to a target current supply time that is based on a preset commutation condition and a second commutation control mode in which the commutation of the coils is carried out on the basis of the result of detecting the zero crossing point of a reverse voltage of the coils. When the activation of the two-phase stepping motor (20) is started, the control unit generates the control signal (Sd) in the first commutation control mode. When the result of detecting the zero crossing point meets a prescribed condition, the control unit generates the control signal (Sd) in the second commutation control mode.
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Inventors:
WADA NAOYUKI (JP)
Application Number:
PCT/JP2022/040076
Publication Date:
June 08, 2023
Filing Date:
October 27, 2022
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
H02P8/10; H02P6/182; H02P6/21
Foreign References:
| JP2018038213A | 2018-03-08 | |||
| JP2005278320A | 2005-10-06 |
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
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