Subject:
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Re: New technique: three position piston control
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Newsgroups:
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lugnet.technic, lugnet.robotics
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Date:
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Mon, 26 Sep 2005 12:08:49 GMT
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Viewed:
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368 times
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In lugnet.technic, Mark Bellis wrote:
<snip>
>
> Interesting stuff! Should make walkers move more smoothly, with the possibility
> of more groups of legs. The trick will then be reversing all the groups, since
> it was easier with just two, using two polarity reversers.
>
> I have a centre-stop mechanism for pneumatic steering for a JCB. It's not part
> of an automatic system though, since I don't yet have an application for that.
Was this single or dual piston?
>
> Does your centre stop cylinder stop accurately in the same place every time,
> even under different pressure conditions? I thought if you put a lot of source
> pressure into the cylinder it might overshoot the mid-point, whereas with low
> pressure it would creep up to it. Accurate repeatable positioning is one of the
> challenges of this scheme.
>
> Mark
Kevin
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