Method and apparatus for calibrating a tool positioning mechanism on a mobile machine
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United States of America Patent
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Jun 26, 2001
Grant Date -
N/A
app pub date -
Jan 15, 1999
filing date -
Jan 15, 1999
priority date (Note) -
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Abstract
A method and apparatus for calibrating sensors of a tool positioning mechanism on a mobile machine are provided. The mobile machine includes a tool, a tool positioning mechanism having a plurality of sensors for providing signals indicative of the physical configuration of the mechanism, a satellite positioning system, and a plurality of positioning system antennas. One of the antennas is detachably mounted on the tool while an other antenna is mounted to a location on the machine other than on the tool. With the positioning mechanism configured so that the tool is at its maximum height, the satellite positioning system is operated to acquire real-time kinematic (RTK) data from the antennas and to process the RTK data to precisely determine the position of the tool. The sensors are then calibrated based on the precisely determined position of the tool.
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