HYDRAULIC CONTROL SYSTEM WITH COMPENSATION OF HYDRODYNAMIC FORCE Russian patent published in 2014 - IPC F15B11/05 

FIELD: machine building.

SUBSTANCE: hydraulic control system (28) is disclosed for a machine (10). The hydraulic control system may include a pump (38), a hydraulic distributor (58) for control of pump efficiency, and also a control hydraulic distributor (68) of a working element made as capable of producing liquid under pressure from the pump and selective direction of the liquid under pressure to a hydraulic motor. The system comprises a controller (34) connected to the hydraulic distributor of efficiency control. The controller may be made as capable of determining pressure drop in the control hydraulic distributor of the working element, substantially differing from the rated pressure drop, determination of the desired position of the hydraulic distributor of efficiency control on the basis of pressure drop, and also determination of hydrodynamic force acting at the hydraulic distributor of efficiency control, on the basis of the desired position. The controller may additionally be made with the possibility of generation of a response signal by determination of the load sent to the hydraulic distributor of efficiency control on the basis of the desired position and hydrodynamic force.

EFFECT: increased accuracy to control a working element of a machine.

10 cl, 3 dwg