Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Stopping a frame from falling using gyros (but keeping agility/manoeuverability
(OP)
Hello,
I am trying to figure out if gyros could solve my problem i would like to design a frame that will not topple over (rough height 1 metre) it needs to stay upright i.e cant be pushed over (mainly left or right) but can still be moved forward or backwards easily .. if gyros could be a solution how could i figure out what force i could exert left or right without the frame toppling .
Thankyou in advanced with any insite or help
I am trying to figure out if gyros could solve my problem i would like to design a frame that will not topple over (rough height 1 metre) it needs to stay upright i.e cant be pushed over (mainly left or right) but can still be moved forward or backwards easily .. if gyros could be a solution how could i figure out what force i could exert left or right without the frame toppling .
Thankyou in advanced with any insite or help





RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
One observation: When you push on it, it doesn't stay stationary, it rotates slowly. So the question there is "how slowly do you need it to move". It's a dynamics problem, not a statics problem.
Second observation: As I recall, a single gyroscope left on it's own will rotate slowly in other directions, not necessarily something you want a frame to do.
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
gyros is greek
From the spin of your post however i'd rather conclude you don't want to push a rotating object, but to prevent the movement of that frame into certain directions whereas being able to move it in others. So, a guide track or rail guiding might be a step towards your intent.
Do you have any mechanical engineering handbooks / some qualified mechanical engineer / technical college o.e. close at hand?
And a sketch would be a very nice first step towards a better understanding of your idea..
Regards
Roland Heilmann
Lpz FRG
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Roland Heilmann,
That is completley correct about the frame i want to be able to design it to not fall over but still maintain its forward movement ( imagine an elderly person and a zimmerframe) whilst the zimmer is fantastic going forward and backwards .. the problem lies with it toppling sideways i want to negate that problem.
So my thinking would be either a gyro in each leg rotating counter to each other using a motor and a simple gimball device to stop left and right deviation. Or a single larger gyro in the cog the only problem is i need it to be as light weight as possible.
Hopefully this clears up my intentions. Currently working on a sketch
Thanks :)
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Mechanically, a gyro drastically increases the moment of inertia of your assembly. The gyro does not stop rotation, it just makes it very much slower. Such a gyro must be very large in relation to your assembly. Tiny gyros are part of an instrument that that tells a servo-system what angle your assembly is sitting at.
--
JHG
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
I was under the impression with gyros if it went to a certain point then a motor would precess the gyro back to a fixed point in space (want for a better word) which would stop or limit a toppling effect ?
Thanks
Jhg
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Look at the picture attached to RolMec's post. That is what those gyros look like that you buy from science stores. You can spin a smaller gyro faster, but it still will be a substantial piece of hardware. You need to distinguish between a dumb disc that rotates and creates inertia, and a servo-system that reads some orientation detector and that sends signals to a servo-drive.
--
JHG
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Thank you for your help !
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
The gyro would have to be on the frame as the frame needs to be able to go anywhere (shops restauraunts roads ect)
There is a new bike out that uses a gyro in its front wheel which (suposedly makes it impossible to push over .. would two smaller versions of this attached to the bottom of a frame in the form of a wheel work maybe ?
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Keith Cress
kcress - http://www.flaminsystems.com
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Note that it's NOT just a gyro; there's actually a stabilization controller that goes with that, which is why the system can compensate for the drift of the CMG
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Mike McCann, PE, SE (WA)
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Yes IRstuff literally what i was thinking !
I will look into the servo systems ITs smoked .. as also sounds doable ..
Cheers guys all really helping
:)
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Was it this one?
BMW bike
Chris, CSWP
SolidWorks '16
ctophers home
SolidWorks Legion
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Mike McCann, PE, SE (WA)
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
Gyro Rail Car
Keith Cress
kcress - http://www.flaminsystems.com
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
A self stabilising vehicle like the BMW in the link would have to have an active stabilising system - perhaps a vertical gyro with the roll orientation of its axis positioned by a motor.
je suis charlie
RE: Stopping a frame from falling using gyros (but keeping agility/manoeuverability
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers