Newsgroups: comp.robotics
Path: brunix!uunet!cs.utexas.edu!math.ohio-state.edu!howland.reston.ans.net!darwin.sura.net!uvaarpa!cv3.cv.nrao.edu!cv3.cv.nrao.edu!browen
From: browen@lyapunov.aoc.nrao.edu (Bruce Rowen)
Subject: Re: direct drive motors?
In-Reply-To: sharkey@robots.ox.ac.uk's message of Tue, 29 Jun 1993 14: 23:03 GMT
Message-ID: <BROWEN.93Jun29124053@lyapunov.aoc.nrao.edu>
Sender: news@nrao.edu
Organization: National Radio Astronomy Observatory, Socorro NM
References: <25998@mindlink.bc.ca> <C9Dnuz.2FF@brunel.ac.uk>
	<1993Jun29.142303.22413@percy.robots.ox.ac.uk>
Date: Tue, 29 Jun 1993 17:40:53 GMT
Lines: 3

for good low speed torque in a small package try microstepping a
stepper motor. Backdrive is a problem, but it can be solved with a
servo loop that "slips" the motor.
