Soon, i imagine we'll be looking at gears and toothed mechanical apparatuses like we look at horses and buggies today. Magnetic power is even greater, once its harnessed appropriately.
@artswri24 күн бұрын
Very clear, well done, finally grasp it thanks to the linear version. Thanks!
@lucientjinasjoe1578Ай бұрын
My car window and wiper motor mechanism ? ?
@onmyworkbench7000Ай бұрын
I subscribed because you talk slow enough for someone to follow what you are saying and you leave the video on what you are showing long enough for the viewer to follow it.
@mrdr9534Ай бұрын
A possibly belated, but no less heartfelt and sincere thanks for taking the time and effort of making this absolutely EXCELLENT video. Explaining a complex subject matter in a VERY clear concise and approachable manner. It is in my opinion "pearls" like this video that makes Y.T. worth while. Best regards.
@LeeCutlerАй бұрын
It is frustrating because there is nowhere I can request a refund. So seems money is just lost because Ian doesn't monitor his emails or phone calls. This is poor business management on what could have been a great product! Extremely disappointed with Ian on this.
@LeeCutlerАй бұрын
Do not buy from Jetpack academy !!! Waiting since May no response to emails or phone calls. I have paid for the first lesson, they have taken my money but not provided the course material !! Its a scam !!
@LeeCutlerАй бұрын
Do not buy from Jetpack academy !!! Waiting since May no response to emails or phone calls. I have paid for the first lesson, they have taken my money but not provided the course material !! Its a scam !!
@stefanschneider3681Ай бұрын
They are starting to be used in astrophotography-mounts, that’s how I got interested in the topic. No backlash is the magic that‘s so important in this area. Great explanation, that’s why they are so,expensive
@brianredmond4919Ай бұрын
Great explanation. Factories replacing every year or few years would explain cheap used robots.
@jgraham82482 ай бұрын
Thank you for the clear demonstration of the harmonic drive!
@agrutter873 ай бұрын
I'll bet hoverboard bldc motors would make a good servo
@senadgalijasevic85684 ай бұрын
I dont get why it needs flex spline? Why not just two gears instead of bearings at 6:50?
@garvincottle36244 ай бұрын
Fantastic, thank you!
@nightlight0x07cc6 ай бұрын
so uh Why not use two gears freewheeling where the lobes would be on the internal cam instead of a flexspine? you would still have the wedge-driving action, but it wouldn't require whatever process is needed to make a flex spline. I bet you could even install the inner gear bearings into slots axial to the "lobes" of the "cam" and spring load the gears to push away from the center so that you compensate for wear overtime and don't develop backlash. It'd be kind of like a planetary gear set, so I'm calling this a binary sun gear set until someone tells me it already exists xD
@prashantpatel35586 ай бұрын
This is the most amazing and useful video i have seen in a long time. Thank you for explaining this. I was really struggling to understand exactly how it works. You are an awesome teacher.
@1414141x9 ай бұрын
Fantastic explanation and the hardware was really good. I now know 'Harmonic Drive' has nothing, at all, to do with music.
@ChillGuy5119 ай бұрын
Great video! Thanks!
@robotcobit64399 ай бұрын
Easist tutoial that I 've ever got.
@baiyuwang62910 ай бұрын
this explanation is wrong. just check the direction of the rotor and stator on a real harmonic drive, their direction is reversed.
@rmsv10 ай бұрын
Having read wikipedia article first, I had a hard time understanding this video, as you use 3 gears instead of just 2.
@user-tm8ir3po5h10 ай бұрын
Best explanation I've ever seen!
@alanlam857211 ай бұрын
It's so excellently explained! God Job!
@weemingkoh11 ай бұрын
Great teaching! I have learnt a lot. Thank you.
@KalashKat Жыл бұрын
Need volume, can't hear you
@tobywan12 Жыл бұрын
Is there really no backlash at all?? Surely youd get some between the mesh teeth?
@vidhyasagar1990 Жыл бұрын
Hello Sir, I hope you are doing well. Please let me know if you are using FOC and PVM for control? Of it is a different control technique? Are you using back emf for sensing?
@saravanampatti1 Жыл бұрын
Sir, you are a life saver.
@sputnik4216 Жыл бұрын
Wow, you're a great teacher, your video is terrific and I now know something completely new about gear drives. Years ago I got a fanuc welding robot arm and was amazed at the zero backlash on the joints but never knew why it was possible until now. As for how to get 2 more teeth with the same pitch, it's hits me now that the outer ring is naturally LONGER than the inner one, hence can have 2 more teeth in its' path. However, sizing up the tooth depth to accomodate the mating, etc is a challenge.Thanks for this explanation and I'll look at more of your videos in the future.
@sputnik4216 Жыл бұрын
At the 1 minute mark , lunar rover, notice the pilot doesn't move, at all, he is utterly frozen in position, head does not swivel to look left into the turn, arms and hand positions utterly frozen in place over all bumps, rooster tail dust from wheels in a vacuum seems very out of place, rate of wheel dust collapse to the ground seems incredibly fast for 1/6 gravity conditions and rover cart seems to have no suspension give at any wheel - maybe a tad but not much if at all, and the antenna doesn't wiggle except at the end of the clip at the strongest bump ... just my observations ... anyway eager here to learn about harmonic drives!
@backho12 Жыл бұрын
Super great explanation. One would think that the flex spline gear would fatigue over a short time, but they're so widely used in so many applications that it must not be an issue. Thanks for the great video demonstration!
@whenpigsflyobservatory Жыл бұрын
Thanks for the concise explanation. I can see that these drives have multiple applications beyond the world of robotics. As an astrophotographer who deals with backlash on a seasonal basis (ambient temperature variations) this technology would be exceptionally well suited to telescope drives. My impression is that this type of mechanism would be less prone to backlash due to temperature variation. Chhers!
@joneslu1377 Жыл бұрын
I must subscribe to the channel. Immediately and deeply attracted by the awesome demonstration and teaching. Thank you!
@StereoSpace Жыл бұрын
Fascinating. Great explanation. Harmonic drives are showing up in telescope mounts and I wanted to see how they worked.
@tmhudg Жыл бұрын
Really well done!
@leixinchang606 Жыл бұрын
Thank you! Wonderful demostration!
@jeffreymorris1752 Жыл бұрын
I finally understand harmonic drives. In 12 minutes. Man that's stellar.
@bpark10001 Жыл бұрын
This is not a harmonic drive; It is a differential gear system, related to the split-ring planetary drive. In a true harmonic drive, the 2 high-torque members are the outer internal gear, & the flexspline, which is coupled to a cylinder terminated at its far end with a "bottom", forming a cup structure. There is no second internal gear. The bottom of the cup is the output & the outer gear is the stationary frame. The input is the wave driver. The outer gear & flexspline can be interchanged (output & stationary parts switched).
@nakfoor1846 Жыл бұрын
Great video, man.
@laurencerilling5873 Жыл бұрын
“Harmonic Drives” piqued my interest, but the differential drive ( e.g; windlass, boat hoist… ) is at least centuries old. I have one for heavy moving, mostly engine swapping, and probably older than me. The only confusing parts are your use of “complicated”, the new name, and the addition of poor engineering to this time-proven device.
@perspectivex Жыл бұрын
Best harmonic drive mechanical explanation I've seen (out of at least a dozen I've come across)
@massimo541 Жыл бұрын
Awesome lesson, many thanks 👏👏👏
@melody3741 Жыл бұрын
I do wish you had explained how all three models you demonstrated were not the same concept and functioned differently
@larrypatterson3957 Жыл бұрын
Great demo!
@rocketfuel- Жыл бұрын
Clear explaination and great video. Thank you
@TheHirade Жыл бұрын
Now I got it, thank you
@1stGenHomestead Жыл бұрын
I 3d printed a barn door tracker for astrophotography and has huge limitations, I’ve been looking into a different way to make one that has less wobble and more load capabilities, I think I’ll give this a shot!
@kdenyer1 Жыл бұрын
Had one fail on Cincinnati centre-less grinder in feed never got it fixed to expensive😮
@rogerbotting3459 Жыл бұрын
I have heard of this but had never had an explanation. You provided a very good explanation.