Newsgroups: comp.robotics
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From: jnicol@malibu.sfu.ca (Jordan James Nicol)
Subject: DC motor current sensor
Message-ID: <jnicol.751591641@sfu.ca>
Keywords: DC motor, current i
Sender: news@sfu.ca
Organization: Simon Fraser University, Burnaby, B.C., Canada
Date: Mon, 25 Oct 1993 23:27:21 GMT
Lines: 27


Does anyone know a good way of measuring the current drawn by a DC
motor (aside from measuring the voltage drop across a resistor) for the
purpose of determining the load torque? I want my 6811 to monitor the
current for a stall condition but not be fooled by the transient
current when the motor first turns on. I've heard of some IC
mentioned here a few months back that does this quite nicely. Anybody
know about this? Also, I've thought of just having the micro wait for
the initial current rush to subside before monitoring begins--any comments
about this approach?

Thanks in advance for any posted or e-mailed replies.

Cheers,
Jordan

-- 

Jordan Nicol 
jnicol@sfu.ca                 
School of Kinesiology         
Simon Fraser University       
-- 

Jordan Nicol 
jnicol@sfu.ca                 
School of Kinesiology         
