SELF-CONTAINED ELECTROHYDRAULIC DRIVE WITH COMBINATION CONTROL OF SPEED OF OUTLET MEMBER Russian patent published in 2007 - IPC F15B9/09 

FIELD: flying vehicles.

SUBSTANCE: drive is designed to control speed of outlet member of actuator in control systems of flying vehicles. proposed drive has nonreversible fixed-delivery pump, electronic units of control microprocessor and amplifier-inverter, dc commutatorless motor, reverse spool valve, electrohydraulic amplifier with electromechanical converter, hydraulic cylinder, hydraulic compensator, auxiliary pump with feed regulator, make-up valves, safety valves, flow rate limiter, filter, spool position pickup, reverse valve, reverse valve inlet and output differential pressure pickups and hydraulic cylinder rod position pickup. Drive employs reverse valve with large area of operating ports providing different modes of outlet member speed control depending on valve of servodrive error signals: at high and mean error signals - positive speed control of hydraulic cylinder rod, and at low error signals, throttling speed control.

EFFECT: improved reliability of drive.

2 cl, 2 dwg