Newsgroups: comp.robotics
Path: cantaloupe.srv.cs.cmu.edu!das-news2.harvard.edu!news2.near.net!news.mathworks.com!news.alpha.net!uwm.edu!reuter.cse.ogi.edu!hp-cv!hp-pcd!hplabs!hplntx!baer
From: baer@hplwave.hpl.hp.com (Rick Baer 7505)
Subject: Re: piezo actuators (info wanted)
Sender: news@hpl.hp.com (HPLabs Usenet Login)
Message-ID: <CyAt7z.Kt9@hpl.hp.com>
Date: Wed, 26 Oct 1994 21:04:47 GMT
References: <38g4rn$bf8@ousrvr.oulu.fi> <Cy8F65.F8L@hermes.hrz.uni-bielefeld.de>
Nntp-Posting-Host: hplwave.hpl.hp.com
Organization: Hewlett-Packard Laboratories, Palo Alto, CA
X-Newsreader: TIN [version 1.2 PL2]
Lines: 25

 Piezo actuators usually have a small displacement range (~ 0.1% total 
extension). The range can be extended (up to ~ 10%) by building composite
structures like bimorphs, but this comes at the expense of decreased force
and slower response. Piezo actuators also require high voltages to reach
their full displacement.

 Contact:

       Aura Ceramics
       5121 Winnetka Avenue North
       Minneapolis, MN 55428
       (612)535-9660
       (800)959-0631

  They make a unique composite device with a very large displacement range.

--

====================================
==  Rick Baer                     ==
==  Chemical Systems Department   ==
==  Hewlett-Packard Laboratories  ==
==  baer@hpl.hp.com               ==
====================================

