Not that I know anything about this but did you consider a potentiometer?
(http://stunthanger.com/smf/index.php?action=dlattach;topic=32643.0;attach=133578;image)
Not that I know anything about this but did you consider a potentiometer?
(http://stunthanger.com/smf/index.php?action=dlattach;topic=32643.0;attach=133578;image)
Pots are not very reliable in any sort of vibration environment, even electric motor vibration. A wire-wound would work OK for a while, a carbon track, probably not all that long.
The Hall effect sensor has no wear elements. A resolver would be as accurate and also doesn't wear out, but requires more processing and is probably heavier.
Brett