Luffing angle measurement system
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United States of America Patent
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Oct 29, 2002
Grant Date -
N/A
app pub date -
Dec 4, 1998
filing date -
Dec 5, 1997
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Abstract
The luffing angle measurement system includes a non-contact distance measuring device mounted on the nose section of a first boom. The non-contact distance measuring device measures either a distance to a second boom pivotally connected to the first boom or measures a time delay between the transmission of electromagnetic energy towards the second boom and reception of electromagnetic energy reflected from the second boom. A controller then converts the measured distance or the measured time delay into a luffing angle.
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