Title:
STEPPING MOTOR CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2016170019
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a 2-coil type step motor with which it is possible to detect the step rotation drive of a rotor with high accuracy in a 2-coil type step motor and save a drive current consumption.SOLUTION: When detecting the rotation of a rotor 101 in a 2-coil type step motor 100, two coils 103 are connected in parallel and the rotation of the rotor 101 is detected, whereby reverse currents occurring in the two coils 103 are added up and rotation detection is carried out. Due to that the reverse currents occurring from the coils 103 increase and the rotation of the rotor 101 can therefore be reliably detected, the handling of a needle can be achieved with pulses of the smallest possible energy corresponding to a load condition, and, hence, power consumption can be saved.SELECTED DRAWING: Figure 3
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Inventors:
MAEDA TOSHINARI
IHARA TAKASHI
FUKUSHIMA TOSHIAKI
YANO YUISUKE
TAKYO HIROSHI
IRI DAISUKE
IHARA TAKASHI
FUKUSHIMA TOSHIAKI
YANO YUISUKE
TAKYO HIROSHI
IRI DAISUKE
Application Number:
JP2015049497A
Publication Date:
September 23, 2016
Filing Date:
March 12, 2015
Export Citation:
Assignee:
CITIZEN HOLDINGS CO LTD
CITIZEN WATCH CO LTD
CITIZEN WATCH CO LTD
International Classes:
G04C3/14; H02P8/02
Domestic Patent References:
| JP2014195371A | 2014-10-09 |
Foreign References:
| KR20050109799A | 2005-11-22 |
Attorney, Agent or Firm:
Akira Miyajima