Title:
FLUID CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2024/080133
Kind Code:
A1
Abstract:
The present invention has: a spring 52 that applies a biasing force in a closing direction to a valve body 32; a servo motor 6 having a drive shaft 62 for operating the valve body 32; a position control mode for controlling the drive shaft 62 to cause the drive shaft 62 to move to a target position, and a thrust control mode for controlling the drive shaft 62 to cause the drive shaft 62 to obtain a target thrust; and a control program that, when operating the valve body 32 from a valve open position to a valve close position, controls the servo motor 6 in the position control mode from the valve open position until the valve body 32 reaches a predetermined position before reaching the valve close position, and, from the predetermined position, switches the control of the servo motor 6 from the position control mode to the thrust control mode with a target thrust of zero, and causes the valve body 32 to reach the valve close position only by the biasing force.
Inventors:
BITO JUNICHI (JP)
MORI AKIHIRO (JP)
TAKAHATA MINORU (JP)
MORI AKIHIRO (JP)
TAKAHATA MINORU (JP)
Application Number:
PCT/JP2023/034904
Publication Date:
April 18, 2024
Filing Date:
September 26, 2023
Export Citation:
Assignee:
CKD CORP (JP)
International Classes:
F16K31/04
Foreign References:
| JP2018206387A | 2018-12-27 | |||
| JP2012015146A | 2012-01-19 | |||
| JP2012092861A | 2012-05-17 | |||
| JPH1130355A | 1999-02-02 |
Attorney, Agent or Firm:
COSMOS INTERNATIONAL PATENT & TRADEMARK OFFICE (JP)
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