Title:
MOTOR DRIVE CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVE CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/171392
Kind Code:
A1
Abstract:
The present invention speedily detects short-circuiting of a coil of a motor. In a motor driving control device (3), a control circuit (1) includes a driving control signal generating unit (10) that generates a driving control signal (Sd) such that a motor (4) is in a driving state in accordance with a driving command (Sc), a current limit value setting unit (15) that sets a current limit value (Ith), a current limiting unit (16) that instructs the driving control signal generating unit (10) to stop excitation of a coil (41) of the motor (4) in a case in which a current flowing through the coil (41) reaches the current limit value (Ith), a clocking unit (19) that measures time over which excitation of the coil (41) is performed by a driving circuit (2), and a short-circuit determining unit (17) that performs short-circuit determining processing for determining whether or not the coil (41) is short-circuited, on the basis of the time measured by the clocking unit (19). In a case in which the time measured by the clocking unit (19) is shorter than a threshold value, the short-circuit determining unit (17) determines that the coil (41) is short-circuited in the short-circuit determining processing.
Inventors:
WADA NAOYUKI (JP)
Application Number:
PCT/JP2023/006473
Publication Date:
September 14, 2023
Filing Date:
February 22, 2023
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
H02P29/024; H02P8/36
Foreign References:
| JP2018021823A | 2018-02-08 | |||
| JPH11356085A | 1999-12-24 |
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
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