Re: Torque meter comments

From: Tapio Linkosalo <tapio.linkosalo_at_iki.fi>
Date: Tue, 01 Sep 2009 11:19:59 +0300

hermann andresen wrote:

> Had considered making a custom strain gage torque transducer.&nbs! p;
> Could automate torque/turns energy release with good accuracy. Much
> simpler & cheaper would be tying in to a cheap digital scale. Difficult
> to automate, but ...

I have been giving some consideration to this, too, but have not yet
come with the optimal solution. Strain gages are one solution, but I
have heard that they give you hard times with drift on e.g. temperature.
Therefore I have also considered putting a magnet on a "conventional"
torsion bar meter, and reading the deflection with a hall sensor. That
way it would double with a mechanical readout. But then, you would have
all the mechanical problems of the torsion and moving parts... Actually,
what I would also like to measure, would be the pull from stretching the
motor, to get some sort of estimate for the total strain on the motor...



-Tapio-
Received on Tue Sep 01 2009 - 01:24:46 CEST