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Abbe error : ウィキペディア英語版
Abbe error
Abbe error, named after Ernst Abbe, also called sine error, describes the magnification of angular error over distance. For example, when one measures a point that is 1 meter away at 45 degrees, an angular error of 1 degree corresponds to a positional error of over 1.745 cm, equivalent to a distance-measurement error of 1.745%.
In machine design, some components are particularly sensitive to angular errors. For example, if the shaft of a lathe is angled slightly, the part will have errors in diameter far down the part.
Abbe error can be detrimental to dead reckoning.
Formula:
: \epsilon = h \sin \theta
\epsilon the error.
h the distance.
\theta the angle.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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