I really like FOC…Not only because it is great on hills (I set 0.10 positive ramping and 30% positive throttle curve for my street hybrid), but also going NINJA silence within my city it is a smart idea (you do not want a cabeza de termo (a not political correct way to talk about robbers) to know your are coming)…I am only loud when using my MTB with chains (also in FOC)…Both boards with out traction control, safe start, etc…I use to run 0.00 positive ramping but did not change to much for real…
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If I would go BLDC and I wouldn´t buy a Vesc. What option should I choose as an ESC?
Or is everyone here who talks about BLDC using an ESC that supports both FOC & BLDS?
I cut off the sensor wires so I’m running sensorless bldc.
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I would imagine that everyone is using one that supports both, all the VESCS technically support FOC but some are not manufactured to a high enough standard to run it reliably. Many people just run BLDC on their FOC capable VESCS because of preference
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It may not be today, but in the long run, FOC will be more efficient. Noise = heat = waste. You are paying for that cool sound. Sharp cornered waves aren’t real. They are clipped sinusoidal waves at some point in the process. More waste. Always remember the first law of thermodynamics. Shit in equals shit out plus shit stuck to the sides.
A lot of what has been done in skateboards is because the battery technology has grown in power faster than the controller technology because it scales more easily.
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Tell us what you want in your own non-technical words. One of us can make a suggestion what you should do.
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Just a question guys, I am running on FOC now and in VESC tool there’s this option 
Motor Cfg > FOC > General > Sensor Mode > Sensorless
But under the general tab, the sensor port is having hall sensor…
So am I running sensored or not in FOC 
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If FOC mode doesn’t specifically says sensored, it is running in sensorless mode, the point here is that despite running in sensorless mode you can still run Sensor Detection if their hooked up, you still need to define the mode your running in.
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Thank you for your reply but my apologies that I don’t really understand what you were explaining…
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might be a thing in the service program.
if you didn´t run a sensor detection the sensors will not work even if it´s selected in general settings out of any reason.
Did you do that? do you even have the sensor wires connected?
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See edit, simply put if motor configuration >> FOC >> sensor mode = sensorless… You are in sensorless mode.
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From reading this thread and never having really ran BLDC extensively, I had assumed BLDC had even a placebo’s worth more power/torque.
On my setup this is not the case at all. With the same settings, 80/-80/80/-13, hybrid mode with sensors detected on both FOC and BLDC, my feet can feel a considerably less amount of torque throughout the range of speed from startup to full speed at full throttle throw on BLDC- FOC same settings feels noticeably more torque-y.
Is this normal? BLDC audibly sounds like a beast from standstill but beyond that… is less torque really par for the BLDC course or is there a BLDC setting in missing?
BTW more directly on topic here’s a video I made a while back directly comparing the sound between BLDC and FOC on one of my builds. https://youtu.be/KTANKugSKDc
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The VESC doesn’t implement BLDC most optimally.
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In case anyone is wondering what isn’t optimal with BLDC mode,
It doesn’t sample the BEMF at a high enough frequency (3khz to 40khz by default), doesn’t have adequate PWM noise rejection, and worst of all
it requires tuning.
The controller I am working on can sample at up to 500khz, completely rejects PWM noise, and integrates the BEMF without any tuning.
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Link? Taking any design suggestions?
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The design is proprietary,
I will take feature requests in a month or two once I have functioning prototypes.
The primary target application for my algorithm is drones, quadcopters, and propeller driven devices.
It will work decently enough for esk8 and electric scooters with motors that have a Kv over 100.
By decently enough, I mean significantly better than VESC BLDC.
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have was you started a thread? I’d like to follow your updates. Safe to assume it won’t be based on VESC™️?
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Not yet, I still need to get a few things sorted out.
It was approved for my thesis, I need to get the paperwork in for a patent.
And yes, it is completely independent of the VESC, and as such won’t have all the drama associated with it.
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Nice, hope you succeed.
I wouldn’t understand all the technical stuff but once you have working prototypes I’d be interested to see it spinning or moving a board.
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It spins a motor (and is hard to stop!), moving a board is a little more tricky.
video of the motor spinning
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