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weird FOC motor oscillations

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andrii619
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Last seen: 1 month 2 weeks ago
VESC Free
Joined: 2020-02-18 23:37
Posts: 3
weird FOC motor oscillations

Hello, everyone,

I'm experiencing some weird motor oscillations with the VESC running in FOC mode. I am running a t-motor MN4012 480KV with a 15x5 propeller at 24V. The VESC hardware I'm using is the FSESC 4.12. When I get to approximately 60% duty cycle the motor starts oscillating. Sometimes I see weird drops in thrust as I increase the duty cycle. I recorded a log of it happening and I also have a plot of the current when the oscillations happen. I'm pretty new to the VESC so idk if there is a setting that I'm missing to make FOC run correctly.

Current plot:

https://drive.google.com/file/d/1ojZpk0A5jN_lHmcHRJt5KjAabrDCR92L/view?u...

ERPM plot:

https://drive.google.com/file/d/1DXN2ndgJkhYp7i92G1Hv9RdQHXVbW9sC/view?u...

FOC plot:

https://drive.google.com/file/d/1_jjFjwfOy4AIOdfN1ZehuFUSjIFIg4S9/view?u...

MotorConfiguration:

https://drive.google.com/file/d/17695Yqhhz-vyqZxFrjtOdBixDINkt6cJ/view?u...

Log file:

https://drive.google.com/file/d/1gNt1RMbKMcgrxh3H7Q-yhBN-F-ZD0Ten/view?u...

 

Thanks.

Best, Andrii.

 

hichemhlm
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Last seen: 1 month 3 weeks ago
VESC Free
Joined: 2019-12-06 22:50
Posts: 2

Hi, I have de same issue, have you found a solution please ?