EP 0832360 A1 19980401 - VARIABLE DISPLACEMENT ELECTRO-HYDRAULIC PUMP
Title (en)
VARIABLE DISPLACEMENT ELECTRO-HYDRAULIC PUMP
Title (de)
ELEKTROHYDRAULISCH VERSTELLBARE PUMPE
Title (fr)
POMPE ELECTRO-HYDRAULIQUE REGLABLE
Publication
Application
Priority
- DE 9500402 W 19950323
- DE 4410719 A 19940328
Abstract (en)
[origin: DE4410719A1] A variable displacement electro-hydraulic pump is operated in a closed loop position control circuit. The adjusting pistons at the adjusting member of the pump are controlled for that purpose by a control valve (20) that in turn is driven by a control amplifier (28). The adjustment path of the control valve and the adjustment path of the adjusting member of the pump are supplied as real values to this control amplifier (28). In addition, an adjusting signal that depends on the angle of rotation of the pump is generated at the control amplifier. This additional pulse-shaped adjusting signal allows the oscillating effects of the driving unit forces on the hydraulic fixation, as well as the resulting noises to be compensated.
IPC 1-7
IPC 8 full level
F04B 11/00 (2006.01); F04B 49/06 (2006.01); F04B 49/08 (2006.01)
CPC (source: EP KR US)
F04B 11/00 (2013.01 - EP US); F04B 49/06 (2013.01 - EP US); F04B 49/08 (2013.01 - EP KR US); F04B 2201/0804 (2013.01 - EP US); F04B 2201/1205 (2013.01 - EP US); F04B 2205/16 (2013.01 - EP US)
Citation (search report)
See references of WO 9526470A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 4410719 A1 19951005; DE 59506814 D1 19991014; EP 0832360 A1 19980401; EP 0832360 B1 19990908; JP H09510764 A 19971028; KR 100329451 B1 20020905; KR 970701832 A 19970412; US 5879136 A 19990309; WO 9526470 A1 19951005
DOCDB simple family (application)
DE 4410719 A 19940328; DE 59506814 T 19950323; DE 9500402 W 19950323; EP 95913049 A 19950323; JP 52490095 A 19950323; KR 19960705295 A 19960924; US 68751196 A 19960801