Newsgroups: comp.robotics
Path: brunix!sgiblab!pacbell.com!ihnp4.ucsd.edu!usc!howland.reston.ans.net!EU.net!sunic!psinntp!psinntp!micro2!schulka
From: schulka@pb.com (Kenneth A. Schulz)
Subject: Re: Pressure Sensors?!?
Message-ID: <1994Mar16.151120.26236@pb.com>
Organization: Pitney Bowes
References: <2lvirg$6ce@news.bu.edu>
Date: Wed, 16 Mar 1994 15:11:20 GMT
Lines: 16

I've experimented a bit with the conductive foam, the black,, carbon-filled,
open-cell kind.  It does change resistance with compression, but it doesn't
suit as a sensor very well.  Recovery time is long--several seconds--and the
value never quite went all the way back to the original zero-applied-force
resistance.  I guess if the amount of hysteresis is repeatable, you might be
able to 'rezero' on the fly through software, but there must be an easier 
way.  Someone mentioned the force-dependent resistors--sounds like a good bet.

Kenneth A. Schulz			Phone: (203)924-3296
Technical Advisor			Fax:   (203)924-3409
Pitney Bowes Technology Center		e-mail:schulka@pb.com

-- 
Kenneth A. Schulz			Phone: (203)924-3296
Technical Advisor			Fax:   (203)924-3409
Pitney Bowes Technology Center		e-mail:schulka@pb.com
