ELECTROHYDRAULIC CONTROL SYSTEM Russian patent published in 2006 - IPC F15B9/04 

FIELD: .

SUBSTANCE: electrohydraulic control system comprises hydraulic tank, pump of variable discharge, control unit, velocity controller, and actuating hydraulic motor. The first outlet of the control unit is connected with the control inlet of the pump. The system also has relay hydraulic distributor and controlled throttling hydraulic distributor. The outlet of the pump is connected with the inlet of the relay hydraulic distributor and with the control inlet of the throttling hydraulic distributor. The outlets of the relay hydraulic distributor is connected with the inlets of the actuating hydraulic motor. The drain line of the relay hydraulic distributor is connected with the pressure inlet of the throttling hydraulic distributor. The outlet of the throttling hydraulic distributor is connected with the hydraulic tank. The second and third outputs of the control unit are electrically connected with the inputs of the relay hydraulic distributor. The input of the control unit is electrically connected with the output of the velocity controller.

EFFECT: enhanced reliability of control.

2 cl, 3 dwg