AUTONOMOUS ELECTROHYDRAULIC STEERING DRIVE WITH ADDITIONAL FEEDBACK ON DYNAMIC PRESSURE Russian patent published in 2024 - IPC F15B9/09 

FIELD: machine building.

SUBSTANCE: invention relates to electrohydraulic servo drives and can be used in electrohydraulic systems as an autonomous steering drive for aircraft flight control. Invention contains additional hydromechanical feedback by dynamic pressure of hydraulic motor, including valve connected to cavities of hydraulic motor, as well as connected to throttle, spring-loaded plunger, spring-loaded pushers, springs of which are adjusted from outside, wherein the pushers themselves are mechanically connected to each other and at the same time are connected to the rocker arm and then to the multi-position three-line distributor located inside the piston, which is mechanically connected to the pump.

EFFECT: increased stability and accuracy of autonomous electrohydraulic steering drive due to additional hydromechanical feedback by dynamic pressure of hydraulic engine, which changes the working volume of the pump depending on the actual value of pressure fluctuations in the cavities of the hydraulic motor of the autonomous electrohydraulic steering drive under the load of alternating or random nature.

1 cl