---
publication_id: "OT-2026-000000404"
title: "Electric valve control device and electric valve device"
published_at: "2026-09-15T19:02:50.662599Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000404"
categories:
  - "industrial-motion-power-transmission/fluid-power"
keywords:
  - "f16k31/046"
  - "f16k37/0041"
  - "h02p8/08"
---

# Electric valve control device and electric valve device

## Abstract

An electric valve control device is configured to (i) start inputting pulse to a stepping motor to rotate a rotor in a first direction, (ii) obtain a rotation angle of the rotor based on a rotation angle signal and a position of the rotor based on a magnetic-flux-density signal each time pulse is input to the stepping motor, and (iii) stop inputting pulse when a change in the rotation angle of the rotor matches a change pattern information and a position of the rotor is a proximity position or a position nearer a reference position than is the proximity position. The change pattern information includes a change in the rotation angle indicating rotation in a second direction.