Title:
POSITIONER
Document Type and Number:
Japanese Patent JP2016173160
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To select and set an optimal control parameter, even when an operation time of an actuator fluctuates by supply air pressure or friction.SOLUTION: With a first correction value table TC in which a correction value corresponding to an operation time region determined correspondingly to the size of an actuator and a slide resistance region determined by sectioning a range where slide resistance (friction) of a valve shaft of a control valve is available, is determined as a first correction value α1, and a second correction value table TD in which a correction value corresponding to the operation time region determined correspondingly to the size of the actuator and a supply air pressure region determined by sectioning a range where a supply air pressure Ps is available, is determined as a second correction value α2, a measured operation time S1 of the actuator is corrected, and thereby the size of the actuator is determined based on the corrected operation time S1.SELECTED DRAWING: Figure 2
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Inventors:
INOUE KAZUHISA
Application Number:
JP2015053904A
Publication Date:
September 29, 2016
Filing Date:
March 17, 2015
Export Citation:
Assignee:
AZBIL CORP
International Classes:
F15B9/09; F16K37/00
Domestic Patent References:
| JP2003090457A | 2003-03-28 | |||
| JP2001280301A | 2001-10-10 | |||
| JP3511458B2 | 2004-03-29 |
Attorney, Agent or Firm:
Masaki Yamakawa
Shigeki Yamakawa
Shigeki Yamakawa