Dynamic payload monitor

Details Dynamic payload monitor Dynamic payload monitor

1990-08-20

1991-12-10

Miller, Jr., George H.

Weighing scales

Computer

Electrical

177139, 177141, G01G 1940, G01G 1908, G01G 1910

Patent

active

050709534

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.

REFERENCES:
patent: 4055255 (1977-10-01), Vasquez
patent: 4230196 (1980-10-01), Snead
patent: 4499960 (1985-02-01), Ehrich et al.
patent: 4691792 (1987-09-01), Shintani
patent: 4919222 (1990-04-01), Kyrtsos

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