Controlling the polar coordinates of an object 2
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- เผยแพร่เมื่อ 29 ก.ย. 2024
- Point A of the pink object (a slider) is determined by the distance r from a fixed point O and the angle φ from a fixed direction Ox.
The orange motor controls the distance r.
The violet motor controls the angle φ.
Blue line in the last scene of the video is the trajectory of point A.
Pros: both motors are grounded. The change of one coordinate does not affect the other.
Cons: too many parts and the height of the whole mechanism is large.
STEP files of this video:
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Inventor files of this video:
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Thx for the animation, i did design the same mechanism recently. a bit worrying about the backlash because there are a lot of gears.
Can have it more powerful, by letting both motor activate, but same or different direction, to control the spin and liner motion.
رائع جدا
Bravo jolie mécanisme. Cela me donne envie de concevoir un mécanisme pour ma caravane pliante - appelée aussi « remorque tente » - et je vais invertir du temps pour faire ce projet avec mon fils. Continuez c’est un bonheur de regarder ces systèmes le matin ! Il est 6:00 presque
Is this for a new printer? :D
Is it possible to construct a drawing machine that operates by mechanical Fourier transformations?..
Sorry, I don't know.
@@thang010146 if I thought it was worthwhile, I'd offer you a more detailed description of what I have in mind. Because if anyone would be able to design a functional model of this mechanism, I think you could certainly do it. I wouldn't dare waste your time on any such trivial curiousity, however. Thanks for the work you continue to do though. I appreciate what you share with us..
Can you give more explanation? "operates by mechanical Fourier transformations"? Are you looking to produce arbitrary periodic motion by adjusting the magnitude of multiple input sinusoidal motions?
@@antlu65 yes, something like that I think. I've seen simulations which can be made to trace out specific curves using a Fourier transformation e.g. the silhouette of Homer Simpson. IIRC this was accomplished with a series of circles of various size, connected one on top of another succesively, each one rotating at a rate determined by the mathematical formula such that the very last one will very nearly trace over the lines of the desired image or shape. It might have been on the Smarter Every Day channel - do you remember seeing anything like that?
For the use case I have in mind, I don't actually require something even remotely as complex. My device only uses 3 to 5 rotating segments in series. I would have use for the ability to vary the rotational speeds of each segment, and none of them would need to rotate faster than 10x the base segment. If I found a way to do that, great--it's not crucial to the project though. I'd be happy figuring out how to have a set of segments in series, all of whom rotate with the same static frequency.
I've modeled this device in Algodoo and even Sketchup; simulations are one thing, functioning physical models are another. I don't know how I might go about creating a mechanical version of this thing. Some kind of complex gear train, perhaps? I don't know - I'm not an engineer.. 😔
@@SineEyed This sounds more like sympathetic vibratory physics than a regular mechanical mechanism. The pendulograph by Rev. John Andrew of Belfast comes to mind. (US Patent US898599A)