Title:
MOTORIZED VALVE CONTROL DEVICE AND MOTORIZED VALVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/149146
Kind Code:
A1
Abstract:
[Problem] To provide a motorized valve control device and a motorized valve device capable of suppressing noise by shortening the time required for the initialization operation of the motorized valve. [Solution] A motorized valve control device 90 (1) starts inputting a pulse P to a stepping motor 66 to rotate a rotor 41 in the first direction, (2) every time the pulse P is input to the stepping motor 66, acquires the rotation angle of the rotor 41 on the basis of a rotation angle signal Sa and acquires the position of the rotor 41 on the basis of a magnetic flux density signal Sm, and (3) when the change in the rotation angle of rotor 41 matches change pattern information J and the position of the rotor 41 coincides with a proximity position Rk or a position closer to a reference position Rx than the proximity position Rk, stops the input of the pulse P to the stepping motor 66. Furthermore, the change pattern information J includes a change in rotation angle indicating rotation in the second direction.
Inventors:
ISHIZUKA YUSUKE (JP)
NARUKAWA BUNTA (JP)
OGIWARA KAI (JP)
NARUKAWA BUNTA (JP)
OGIWARA KAI (JP)
Application Number:
PCT/JP2022/048468
Publication Date:
August 10, 2023
Filing Date:
December 28, 2022
Export Citation:
Assignee:
FUJIKOKI CORP (JP)
International Classes:
F16K31/04; H02P8/08
Foreign References:
| JP4028291B2 | 2007-12-26 | |||
| JP2021185326A | 2021-12-09 |
Attorney, Agent or Firm:
OPUS IP LAW FIRM (JP)
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