EP 1176314 A3 20040107 - Method and system for compensating the compressibility in hydraulic drives
Title (en)
Method and system for compensating the compressibility in hydraulic drives
Title (de)
Vorrichtung und Verfahren zum Ausgleichen der Kompressibilität bei hydraulischen Antrieben
Title (fr)
Procédé et dispositif pour compenser la compressibilité dans des commandes hydrauliques
Publication
Application
Priority
DE 10036646 A 20000726
Abstract (en)
[origin: EP1176314A2] The system for compensating for the compressibility of hydraulic fluid in a hydraulic actuator has a pressure sensor (21) to measure the pressure in the actuator's displacement chamber (3), a differentiator (24,25) to calculate the fluid compression flow during pressure changes in the displacement chamber due to the compressibility of the fluid, and means to feed or drain a compensating flow of hydraulic fluid regulated on the basis of the calculated compression flow, and which comprises a cylinder (14) connected to the displacement chamber and equipped with a piston (15) charged with underpressure or overpressure via a valve(28). An Independent claim is included for a procedure for compensating for the compressibility of the hydraulic fluid in a hydraulic actuator.
IPC 1-7
IPC 8 full level
F15B 9/09 (2006.01); F15B 21/08 (2006.01)
CPC (source: EP)
F15B 9/09 (2013.01); F15B 21/08 (2013.01)
Citation (search report)
- [X] US 4630523 A 19861223 - TERSTEEGEN JOHANNES [DE]
- [DA] DE 4228308 A1 19940303 - REXROTH MANNESMANN GMBH [DE]
- [DA] US 3805530 A 19740423 - RICHARDSON R
- [A] US 4932840 A 19900612 - TAKEUCHI KUNIHIKO [JP], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1176314 A2 20020130; EP 1176314 A3 20040107; EP 1176314 B1 20060215; DE 10036646 A1 20020214; DE 50108932 D1 20060420
DOCDB simple family (application)
EP 01116889 A 20010711; DE 10036646 A 20000726; DE 50108932 T 20010711