Dynamic payload monitor
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United States of America Patent
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-
Dec 10, 1991
Grant Date -
N/A
app pub date -
Aug 20, 1990
filing date -
Aug 20, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A dynamic payload monitor measures and displays payload weight for a loader vehicle operated on a slope by sensing the hydraulic pressure and position of the lift arm cylinders. The payload weight is computed by curve fitting the sensed cylinder pressure and position data to a second order polynomial, and then performing interpolation or extrapolation with a pair of pressure versus position reference parabolas obtained during calibration. Payload weight is corrected for errors caused by operating the loader vehicle on a slope. The weight computation algorithms used in the dynamic payload monitor are applicable to a number of work vehicles having at least one work implement linkage and at least one hydraulic cylinder for modifying the linkage geometry.
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