Title:
2段流体弁の制御方法及び装置
Document Type and Number:
Japanese Patent JP3554899
Kind Code:
B2
Abstract:
A method and apparatus for controlling a two-stage valve (10) using a closed-loop control system, the system including a variable gain element (54), the method involving continually performing the steps of estimating the flow gain of the pilot stage (12) of the valve; comparing the estimated flow gain with a reference flow gain; and in response to said comparison step, adjusting the gain of the variable gain element (54) to maintain a substantially constant closed-loop gain.
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| JP3468471 | HYDRAULIC SERVO VALVE |
| JPH0620902 | [Name of invention] Control circuit of control valve |
Inventors:
Jonathan Bruce Gambling
Bradley Didley
Bradley Didley
Application Number:
JP25367493A
Publication Date:
August 18, 2004
Filing Date:
September 17, 1993
Export Citation:
Assignee:
Trinova Limited
International Classes:
F15B13/043; F15B9/03; G05D3/14; (IPC1-7): F15B13/043
Domestic Patent References:
| JP56080511A | ||||
| JP52079185A | ||||
| JP6026501A | ||||
| JP4501628A | ||||
| JP2017477A |
Attorney, Agent or Firm:
Calyx
Seiichi Sawaki
Kiichi Sawaki
Seiichi Sawaki
Kiichi Sawaki