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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Wed, 28 Sep 2005 02:20:30 GMT
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Viewed:
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4876 times
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In lugnet.technic, Kevin L. Clague wrote:
> 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?
Mark,
Did I miss your answer on this?
Kev
>
> >
> > 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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