SYSTEM AND PROCEDURE FOR CONTROL OF INDEPENDENT METERING VALVE; WORKING MACHINE Russian patent published in 2011 - IPC F15B21/02 F15B11/28 F15B11/42 F15B11/44 

FIELD: machine building.

SUBSTANCE: system (24) and procedure are designed for hydraulic control of working machine (10). The system has device (30c) of a hydraulic drive with first and second chambers (56, 58), first and second metering valves (32, 28) having elements of the valve moving for filling the first and second chambers and for release of liquid from the first and second chambers correspondingly. Also, the system is equipped with at least one sensor (40) of liquid generating a signal of loading corresponding to loading a device of the hydraulic drive. The system of hydraulic control also has device (22) of operator interface travelling for generation of a signal of required rate of the hydraulic drive unit. Additionally, the system has controller (48) communicating with first and second metering valves and with at least one sensor of liquid and the device of operator interface. The controller transfers the element of the valve of the first metering valve into a position based on a signal of required rate, and the element of the valve of the second metering valve into a position controlled by a signal of loading and specified pressure in the second chamber.

EFFECT: controlled by operator rate of transfer of working element of machine.

10 cl, 4 dwg