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From: cmcmanis@stpeter.Eng.Sun.COM (Chuck McManis)
Newsgroups: comp.robotics,comp.lsi,sci.electronics
Subject: Re: velocity sensing for robotic joints
Message-ID: <140483@sun.Eng.Sun.COM>
Date: 10 Aug 90 18:09:27 GMT
References: <1990Aug7.205751.21206@ecf.utoronto.ca> <19481@well.sf.ca.us>
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Another area you might consider is using simple inductors. A system
which has as much resolution as you'd care to spend on it. The 
tecnique being to place an inductor on one section of the joint and
a moving "core" (in the form of a conductive wire) on the other 
section. Energizing the inductor and then measuring the emf generated
in the core. Note I've never actually implemented one of these so
I don't have complete confidence in its viability but I don't see
any obvious flaws in it.


--
--Chuck McManis						    Sun Microsystems
uucp: {anywhere}!sun!cmcmanis   BIX: <none>   Internet: cmcmanis@Eng.Sun.COM
These opinions are my own and no one elses, but you knew that didn't you.
"I tell you this parrot is bleeding deceased!"