EP 0251603 A2 19880107 - Hydraulic actuator controlled by servovalve.
Title (en)
Hydraulic actuator controlled by servovalve.
Title (de)
Hydraulisches Stellglied mit Servoventilsteuerung.
Title (fr)
Actionneur hydraulique commandé par servo-soupape.
Publication
Application
Priority
GB 8615427 A 19860624
Abstract (en)
In an hydraulic system in which an hydraulic actuator (1) is controlled by a servovalve (10;50), a feed back signal derived from fluid flow associated with actuator movement is used to operate the servovalve, to ensure accurate control of the hydraulic actuator. The feedback signal can be an hydraulic signal derived from the pressure differential developed across a restriction (30) in the fluid flow, which can be applied to the servovalve directly, or an electrical signal for application to an electrical input to the servovalve, after modification if required, obtained from the pressure differential.
IPC 1-7
IPC 8 full level
F15B 13/043 (2006.01); F15B 13/16 (2006.01)
CPC (source: EP KR)
F15B 11/00 (2013.01 - KR); F15B 13/16 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0251603 A2 19880107; EP 0251603 A3 19891206; AU 7456087 A 19880107; GB 8615427 D0 19860730; JP S6323006 A 19880130; KR 880000705 A 19880328
DOCDB simple family (application)
EP 87305491 A 19870622; AU 7456087 A 19870622; GB 8615427 A 19860624; JP 15320087 A 19870619; KR 870006317 A 19870622