PSN-L Email List Message
Subject: Re: STM-8
From: "Michael Kimzey" mckimzey@...........
Date: Wed, 28 Feb 2007 21:40:39 -0500
Hi Chris (and everyone else, too...)
> An alternative is to use a flat rectangular coil with quad NdFeB
>magnets on mild steel backing plates. You might find this construction
>drawings at http://jclahr.com/science/psn/chapman/lehman/index.html The
>powerful NdFeB magnets can give larger magnetic fields in a wider gap.
I built a damping assembly for my AS1-copy and used this type of dampening.
(excellent drawings!) For it's use here, I guess I would use a coil (maybe
like a 220v relay coil?) between the magnets and instead of using it as the
actual sensor (like on the AS1), it would rather function only as a
damper...do I understand correct?
> You need to be able to measure the force / current characteristic
>the resistance to calculate the feedback required in a triple loop system.
> Look also how Bob McClure has used NdFeB magnet / coil systems at
It is this part that scares me. I don't have a really good backround in
electronic theory to understand some of the fine points of this stuff. If I
went ahead with this some time in the future, are there instructions
somewhare that could tell me how to measure and calculate these values? I
know that in reading though STM's emails that there is mathlab formula's and
other such stuff....but I don't even know what mathlab IS! :(
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