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Title:
MOTOR CONTROL CIRCUIT, MOTOR CONTROL DEVICE, ACTUATOR, AND METHOD FOR CONTROLLING STEPPING MOTOR
Document Type and Number:
WIPO Patent Application WO/2018/025665
Kind Code:
A1
Abstract:
Provided is a motor control circuit capable of driving a motor by ensuring driving torque in various environments. A motor control circuit (12) is provided with an input voltage measurement unit (125), a temperature measurement unit (128), a speed setting unit, and a speed control unit. The input voltage measurement unit (125) measures an input voltage inputted to a motor control device (10). The temperature measurement unit (128) measures a temperature. The speed setting unit sets a target value of the speed for driving a stepping motor (20), on the basis of the result of measurement performed by the input voltage measurement unit (125) and the result of measurement performed by the temperature measurement unit (128), and also on the basis of a set value of the driving speed preset for each of multiple partial regions that are defined in a matrix form by a threshold about the input voltage and a threshold about the temperature. The speed control unit controls the driving speed according to the target value of the driving speed set by the speed setting unit.

Inventors:
TAKADA Kazuo (4106-73 Oaza Miyota Miyota-machi, Kitasaku-gu, Nagano 93, 〒3890293, JP)
MATSUI Takayuki (4106-73 Oaza Miyota Miyota-machi, Kitasaku-gu, Nagano 93, 〒3890293, JP)
Application Number:
JP2017/026467
Publication Date:
February 08, 2018
Filing Date:
July 21, 2017
Export Citation:
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Assignee:
MINEBEA MITSUMI INC. (4106-73 Oaza Miyota, Miyota-machi Kitasaku-gu, Nagano 93, 〒3890293, JP)
International Classes:
H02P8/14
Foreign References:
JPH1118491A1999-01-22
JPH11294196A1999-10-26
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (Sonderhoff & Einsel Law and Patent Office, Shin-Marunouchi Center Building 6-2, Marunouchi 1-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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