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UAV motor BLDC detection fails

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Torbjorn
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UAV motor BLDC detection fails

Hi

I am attempting to detect parameters with BLDC mode, but it fails.

The motor is an Axi 8120/08 (675 g, Kv 190)

The VESC is v6mk5 running fw 5.30.

After tuning the detection parameters to:
I = 3 A
w = 500 ERPM
D = 0.04
It looks like the routine is completed, but I still get "Detection failed." instead of results, and in the lower right corner it say "Bad detection results receiced" with red background.

In the VESC Terminal, the command "fault" yields "FAULT_CODE_NONE" and the debug console also simply states "Bad Detection Result Received".

The Realtime Data window show three quite similar sets of waveforms with ramping up of Current in, Current motor and Duty cycle, and it is no audible sign of anything not working, so I seem to have run out of ideas.

VESC.png

Any suggestions are welcome.

frank
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Joined: 2016-12-27 20:19
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What about FOC? BLDC is pretty outdated stuff. Have you tried to detect the motor in FOC mode via the Wizard?