Dynamic payload monitor

Details Dynamic payload monitor Dynamic payload monitor

G - Physics

01

G

G01G 19/08 (2006.01)

Patent

CA 2082930

2082930 9203709 PCTABS00011 A dynamic payload monitor (10) measures and displays payload weight for a loader vehicle (11) during tip loading by sensing the hydraulic pressure of the lift and tilt cylinders (14, 15) and the geometry of an implement linkage (12). The payload weight is computed by curve fitting the sensed lift cylinder pressure and geometry data to a second order polynomial, and then performing interpolation or extrapolation with a pair of pressure versus position reference parabolas obtained during calibration. Tilt cylinder curves are derived by curve fitting tilt cylinder pressure and lift cylinder geometry data to a third order polynomial. The tilt cylinder curves are then compared to a plurality of tabulated tilt cylinder curves. Tip loading conditions are detected and the computed payload weight is modified in response to the magnitude of the tilt cylinder pressure. 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 two hydraulic cylinders for modifying the linkage geometry.

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