Subject:
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Re: All Terrain Crane
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Newsgroups:
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lugnet.technic
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Date:
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Tue, 25 Jun 2002 19:24:03 GMT
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Viewed:
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3412 times
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Darn it! I felt sure you were going to say there was a gyro or something
involved! I've been thinking that an RCX compatible gyro sensor is the
logical companion to the latest new sensor idea I've been working on - an
accelerometer. Now, if I could just get that 4x4 stud GPS brick working, we
could take over the planet with autonomous RCX controlled everythings :)
JB
In lugnet.technic, Ralph Hempel writes:
> > > I used to work for PAT, a major supplier of LMIs to Demag, Grove,
> > > and others.
> >
> > Any chance of a wee explanation about how these things work? The trouble
> > with looking deeply into a subject is that it usually generates even more
> > questions that you had in the first place, and this is exactly what happened
> > here. I remember reading about old mechanical LMIs but not modern ones!
>
> Ha! There IS something you don't know about cranes!
>
> Basically, they have pressure transducers on the hydraulics that control boom
> luffing. Then there's a really complicated bit of software that's customised
> for each and every crane geomoetry that takes into account the boom angle, boom
> extension, jib attachment and angle, etc and calculates the limit of operation.
>
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Message has 2 Replies:
 | | RE: All Terrain Crane
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| (...) The PAT company also makes weigh-in-motion systems. The bending plate uses a strain-gauge to measure the load. What's interesting about this is that the approach path needs to be pretty level, so I designed a simple accelerometer that fed into (...) (24 years ago, 25-Jun-02, to lugnet.technic)
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Message is in Reply To:
| | RE: All Terrain Crane
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| (...) Ha! There IS something you don't know about cranes! Basically, they have pressure transducers on the hydraulics that control boom luffing. Then there's a really complicated bit of software that's customised for each and every crane geomoetry (...) (24 years ago, 25-Jun-02, to lugnet.technic)
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