VESC-Tool 2.0 and Firmware 4.0 - The beginning of a new era - (SERIOUS)

#299

All of the cool kids get to test the TB ESC I see, I’ll just be here with my 1986 jalopy VESC

6 Likes
#300

Is there a reason why the ld_lq_diff increased so drastically?

First motor detection

IMG_20200219_161806
IMG_20200219_1618061748×2328 2.1 MB

IMG_20200219_161828
IMG_20200219_1618282328×1748 1.95 MB

second motor detector

15821269719996164500081776421656
158212697199961645000817764216561728×2304 2.56 MB

IMG_20200219_164243
IMG_20200219_1642434656×1369 3.05 MB

Did yet another motor detection and measured the inductance 6 times.

IMG_20200219_164904
IMG_20200219_1649044656×2339 5.24 MB

2 Likes
#301

As far a I know BLDC used high frequency injection from the beginning, this is the sound it makes when starting from a dead stop

Probably is a simpler and more rudimentar implementation compared to the new HFI

2 Likes
#302

@Trampa @Deodand

2 Likes
#303

Has anyone gotten this to work on flipsky 6.6 ?

#304

The HFI algorithm we built operates withing the framework of the FOC algorithm cleanly.

Adapting it to BLDC would be pretty challenging, especially with things like changing pwm frequency depending on rpm of the motor which occurs during bldc operation. Probably would need to just build it again from ground up. Pretty sure BLDC isn’t using anything like HFI already.

7 Likes
#305

I sent my mate @xsynatic my fsesc and his motor only clicks, when he clicks on the full brake button and when he is using HFI. No plot appears and nothing happens. Do you know something?

#306

Just curious, isn’t a signal injected on BLDC sensorless to determinei the rotor position?

1 Like
#307

Pretty sure its more of a stutter/pulse to get any kind of BEMF, to determine position.

2 Likes
eLofty Direct Drive Discussions-read before buying
#308

I’ve notice some discrepancies with motor detection between the old algorithm and the new one with the quicker and more accurate LR detection. The biggest discrepancy is the L value not being consistent or being very different from the old FW. The difference is significant enough to cause non-ideal operation of the motor with lost torque and severe cogging under load. This is all been with my own hardware so that could be a discrepancy in itself. Just curious if anyone has experienced something similar or my case is isolated.

4 Likes
#309

You mean like this?

2 Likes
#310

For me it can be up to a 10uH difference between FW3.62 and the latest FW. Motor then runs well under FW3.62 but not newest FW. As stated before, could also be hardware differences at play.

2 Likes
#311

4.1 “HFI” sensor mode

Control Mode: Current Hyst Reverse With Brake
sensorless ERPM HFI: 3500
Max ERPM for direction switch: 870

14 Likes
Esk8 confessional
Wanted items cheap or free
Arc Boards Enclosure
#312

Seems pretty smooth :+1:

The high pitch sound does make it sounds like your board is ready to take off to the moon :laughing:

6 Likes
#313

Seeing as I am accustomed to BLDC and actually don’t like the quietness of FOC, it’s unnerving to me when the HFI turns off and it’s silent as an owl

This HFI is really the only feature that could have caused me to begin using FOC…and the feature is very, very nice.

@Deodand Can’t wait for that in BLDC mode… is that planned?

9 Likes
#314

Also I’d like to point out that this is the EXACT sound our commuter trains around here make when you’re a passenger.

3 Likes
#315
#316

I know :rofl:

But I asked again on purpose :kiss:

5 Likes
#317

@DerelictRobot

1 Like
#318

To be fair, even though there are advantages to BLDC, FOC is superior in principle. Pure sine wave is well sought after in many industries.

3 Likes