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[DPRG] Does anyone have any experience with "servo savers"?
Subject: [DPRG] Does anyone have any experience with "servo savers"?
From: Ed Paradis
legomaniac at gmail.com
Date: Wed Dec 12 13:29:19 CST 2007
Hi everyone,
I was looking up servos for yet-another-robot project, and I saw some
items called "servo savers". They seem to be springs that dampen
shocks to your servos.
I am interested in building series elastic actuators, and if these
things work like I think they do, they're a really simple way of
implementing a series elastic motor.
The idea in a series elastic motor (simply) is that your motor drives
a spring, which then drives your load, be it wheels or levers.
>From what I can find online, thats exactly what these servo savers
could do. They seem to be more to protect your servo if a crash tries
to back drive your servo by compressing a spring. The energy of the
shock goes into compressing the spring instead of cracking a gear in
your servo.
With a properly rated spring (probably one with a much lower spring
constant than typical for these things), you could have a great series
elastic motor that is available ''off the shelf''.
Has anyone seen one of these in person? Does this seem possible?
Ed
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