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Low-Speed / Fine Positioning Brushless Motor Controller
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- Опубликовано: 12 фев 2020
- The "big" version of this video is now up: • Video
This is a quick demonstration of what I'm calling the NearZero board, which offers two-channel control of brushless motors for fine positioning applications with up to 3A per motor. This is for hub motors and actuators for domestic robots. It's open source and the website is here: www.skysedge.us/
An engineer owned business is a great tag line. Also this is a really cool product
This is so awesome! I’m so happy RUclips started randomly showing me these videos!
Ditto!!
Very cool and open source, nice. 3 years since this video, I'm assuming cheap chinese version if not already out will be soon. Proliferation of hub motors now will be handy circuit.
dude how is someone this cool anywhere near me
Quite interesting!
Sky's Edge? Stellar!
please tell us about the domestic robots though
Looks like it's actuated by a human muscle. Impressive
Unique vision.
Shows still not available on website.
looks amazing!
The full video shared in the description is private, could you do something about that please
Love your stuff
looks interesting
nice
The description States the big video is out - but the link doesn't work unfortunately :/
This is amazing!
Hey,
Is it possible to use position a magnetic position sensor like as5048 or as5600 module?
Hello, what exactly makes these motor conrollers (this one, odrive) so expensive compared to regular brushless esc' s?
For the motors, more poles(minimizes clogging, more torque), smaller air gap, thus more torque and higher rotational velocity), more coil windings(lower KV = higher voltage >> higher efficiency, lower speed for increased torque).
For the drivers, field oriented control(torque and flux control), sinusoidal control(unlike RC escs that commonly use trapezoidal control, otherwise known as 6 step commutation), closed-loop control(rotational feedback from the motor, no step loss) advance control and feedback from the motor drives
@@byungjaelee5110
you didn't answer the question))) which was set
by stickievidz
a good answer is a short answer
@@3dpu438 He did answer the question. All those things that BYUNG JAE Lee listed are factors that increase the complexity and cost of this type of motor controller. Also no, sometimes a good answer is a long, detailed answer. There's only a certain amount that you can compress an explanation before you start losing information.
Very cool. What is the KV of that motor? Does it work with BLDC motors with large KV?
Very interesting. I assume you're not using back-EMF, but some kind of open loop position control via manual commutation?
I think they use hall effect sensors
@@MclarenF1rocket there is no they ... only a she pay attention ..
Very cool!
Hi Justine, any interest in designing/tweaking a driver for my company related to your motor controller? Paul
Very excellent 👌👍
Question 1:
is it possible to rotate a 3 phase bldc with this controller step by step?
If fact any constant step ?
In robotic I should know minimum possible rotating degree
Question 2:
Is it possible to add a feature to this bldc controller to accept Step & Direction input like stepper motor controller?
Yes and yes. However, I don't think the mechanical stepping will be as reproducible and precise as a high precision stepper motor. Maybe look into odrive also.
Looks promising, does it provide the same torque at low speeds?
Torque is always provided best using gears.
@@athrunzala5337 not anymore
@@kiloton1920 when it comes to robots as a domestic product they should else any electric problem will create a possible hazard or embarassing situation. Brushless doesn't always mean a good thing.
Also brushless motors consume a lot of power therefore consumers will find themselves charging them several times per day because you cannot predict how much these robots will be abused.
Just because things work in the Lab doesn't mean that they'll make success on the market.
Sensorless position control?!? Is this HFI?
you are unbelievable! (in a good way)
Muy interesante!!
Is this sensorless?
USD125 ... yep, as you said, it's cheaper.
still waiting for nx2
What brushless motors are you using here ?
Yeah, I also wonder...
yes, me too lol
Hey, any update on this?
Hi Mashur, yes, I added the link to the description but here it is: ruclips.net/video/OZvjfbpXpro/видео.html
I would love to team up with you to build a fully automated hydroponic grow box ideally for medical cannabis patients and recreational home growers
Hı Justine. I admire your works. But as a roboticist I must add that fine position control is not the key/focal point, particularly for robots that interact with humans and/or the environment. Typically, fine positioning motors tend to have large mechanical stiffness (physical and/or by software)
But you don't have any videos?
Question 1:
is it possible to rotate a 3 phase bldc with this controller step by step?
If fact any constant step ?
In robotic I should know minimum possible rotating degree
Question 2:
Is it possible to add a feature to this bldc controller to accept Step & Direction input like stepper motor controller?
Question 1:
is it possible to rotate a 3 phase bldc with this controller step by step?
If fact any constant step ?
In robotic I should know minimum possible rotating degree
Question 2:
Is it possible to add a feature to this bldc controller to accept Step & Direction input like stepper motor controller?
The most expensive thing in a robot actuator is gearbox although :(
Is this open loop control?
Question how can I get in touch with you. I have an idea that will make millions possibly more but I lack the expertise on how to make it. I’m willing to bring you in but will not have my idea ripped off. I’m hoping your a good honest person as the money made will make us both richer
I need this.
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