ACTUATOR DEADHEAD/STALL DETECTION IN A LOAD SENSE HYDRAULIC SYSTEM
A load sense hydraulic system includes pressure sensors that provide feedback to an electronic controller to monitor a pressure margin between a pump supply pressure and an actuator meter-in load pressure. Pre-collapse and collapse of the pressure margin (the collapse indicating a deadhead or stall...
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| creator | LOWMAN, Roger D JAGODA, Aaron Hertzel LARISH, Chad Anthony |
| description | A load sense hydraulic system includes pressure sensors that provide feedback to an electronic controller to monitor a pressure margin between a pump supply pressure and an actuator meter-in load pressure. Pre-collapse and collapse of the pressure margin (the collapse indicating a deadhead or stall condition of the actuator), can be tracked by the electronic controller to establish a normal operating pressure margin. The established normal operating pressure margin can be assessed by the controller against a current, actual pressure margin based on feedback from the pressure sensors. A pre-determined threshold variation by the actual pressure margin from the normal operating pressure margin provides an indication of deadhead or stall condition to the controller. The controller may then responsively make modifications to the load sense hydraulic system to remedy the deadhead/stall condition. |
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Pre-collapse and collapse of the pressure margin (the collapse indicating a deadhead or stall condition of the actuator), can be tracked by the electronic controller to establish a normal operating pressure margin. The established normal operating pressure margin can be assessed by the controller against a current, actual pressure margin based on feedback from the pressure sensors. A pre-determined threshold variation by the actual pressure margin from the normal operating pressure margin provides an indication of deadhead or stall condition to the controller. 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Pre-collapse and collapse of the pressure margin (the collapse indicating a deadhead or stall condition of the actuator), can be tracked by the electronic controller to establish a normal operating pressure margin. The established normal operating pressure margin can be assessed by the controller against a current, actual pressure margin based on feedback from the pressure sensors. A pre-determined threshold variation by the actual pressure margin from the normal operating pressure margin provides an indication of deadhead or stall condition to the controller. The controller may then responsively make modifications to the load sense hydraulic system to remedy the deadhead/stall condition.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS |
| title | ACTUATOR DEADHEAD/STALL DETECTION IN A LOAD SENSE HYDRAULIC SYSTEM |
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