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US 10,378,563 B2Granted
Work vehicle and data calibration method
AssigneeKomatsu Ltd.
InventorsAtsushi Ishida, Yuto Fujii, Tsutomu Iwamura, Haruki Nishiguchi
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AssigneeKomatsu Ltd.
InventorsAtsushi Ishida, Yuto Fujii, Tsutomu Iwamura, Haruki Nishiguchi
Estimating the term…
A work vehicle includes a work implement, a valve adjusting a flow rate of a hydraulic oil operating the work implement, an electromagnetic proportional control valve generating a pilot pressure guided to the valve, a controller outputting a current to the electromagnetic proportional control valve, and a sensor for detecting an operation of the work implement. The controller increases stepwise a current value of a current output to the electromagnetic proportional control valve by repeating processing for temporarily lowering a current value of the current output to the electromagnetic proportional control valve and thereafter outputting to the electromagnetic proportional control valve, a current having a current value greater than the current value before lowering. The controller calibrates data for predicting an operation speed of the work implement based on a result of detection by the sensor at the time when the current value is increased stepwise.
A work vehicle comprising:
A data calibration method in a work vehicle in which a work implement is operated, the work vehicle including a valve adjusting a flow rate of a hydraulic oil operating the work implement, an electromagnetic proportional control valve generating a pilot pressure guided to the valve, a controller outputting a current to the electromagnetic proportional control valve, and a sensor for detecting an operation of the work implement, the data calibration method comprising:
Dependencies are inferred from the claim text.