Title:
MOTOR SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/127341
Kind Code:
A1
Abstract:
A motor system (1) comprises: a plurality of motors (23); a motor driver (21); and a switch unit (22). The motor driver (21) generates and outputs, using PWM control, a driving waveform for causing the plurality of motors (23) to generate a driving force. The switch unit (22) selectively switches a target motor, to which the electric power outputted by the motor driver (21) is to be supplied, between the plurality of motors (23). The switch unit (22) is controlled by a switching controller (43) so as to switch the target motor cyclically between the plurality of motors (23). A carrier cycle of the PWM control includes a low-level period in which a PWM output is at a low level. The switching controller (43) controls the switch unit (22) such that the switch unit (22) switches the target motor in the low-level period.
Inventors:
FUKUSHIMA DAISUKE (JP)
AZUMA YOSHIYUKI (JP)
AZUMA YOSHIYUKI (JP)
Application Number:
PCT/JP2022/042777
Publication Date:
July 06, 2023
Filing Date:
November 17, 2022
Export Citation:
Assignee:
MURATA MACHINERY LTD (JP)
International Classes:
H02P5/74
Foreign References:
| JP2008043063A | 2008-02-21 | |||
| JP2007288964A | 2007-11-01 | |||
| JP2017184389A | 2017-10-05 |
Attorney, Agent or Firm:
KATSURAGAWA, Naoki (JP)
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