Hydraulic control valve system with electronic load sense control

An apparatus is provided which has sensors that detect pressure on opposite sides of a control valve which controls the flow of hydraulic fluid from a source to a hydraulic actuator. The sensors produce electrical signals indicating those pressures. In response to the sensor signals, a controller pr...

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Bibliographische Detailangaben
Hauptverfasser:	CLANTON, RICHARD R, PFAFF, JOSEPH LAWRENCE, JACKSON, RANDALL S
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CONTROL OR REGULATING SYSTEMS IN GENERAL CONTROLLING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FUNCTIONAL ELEMENTS OF SUCH SYSTEMS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS PHYSICS REGULATING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES WEAPONS
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Beschreibung
Zusammenfassung:	An apparatus is provided which has sensors that detect pressure on opposite sides of a control valve which controls the flow of hydraulic fluid from a source to a hydraulic actuator. The sensors produce electrical signals indicating those pressures. In response to the sensor signals, a controller produces an output signal the operates a proportional control valve to thereby regulate pressure at a node of the hydraulic circuit. Several mechanisms are described that react to the pressure at the node by varying the pressure of the fluid being supplied to the main valve so that a controlled pressure level is achieved.