hi all .
Problem with this esc .
at almost full speed, at stabilized speed, I have intempestive accel/brakes. it's quite dangerous!
no problem in other states .. accelerations and brake .
My configuration : dual hubs sensored( hoverboard ) , FOC in 12s ,good motor detection .
Remote VX2 on uart with can . I also tried without can and remote receiver on 2 uart ports ..
it seems that the vesc4 is having issues in FOC & 12s ?? I do not know which parameter to modify ..
it seems HW4 with 2 shunts have sometimes the problem with some motors at 80% duty cycle.
a mixing phase noise with current measure . bad luck for me.
no parameters to adjust to amplify current measure ?
The HW 4.xx uses 2 shunts only and it lacks linearity from 60% throttle onwards. It will be linear to around 60% of full speed, then it will decrease for a bit up to around 80 % and then it will increase from 80% to 100% very fast.
Have a read here: https://vesc-project.com/node/403
okay .
I also thought it was due to the lack of 3rd shunt, but in the meantime I think I found the solution in this post: https://vesc-project.com/node/3250
my DUTY CYCLE CURRENT LIMIT was at 100% . it should be at 85% for e-skate applications .You will see on log that near max speed on flat , current decrease(normal) and become negative .
if DUTY CYCLE CURRENT LIMIT always < MAX DUTY CYCLE it's always good and stay positive
during the tests I had a nice fall, so injured, I can't try. but i will find a tester
DUTY CYCLE CURRENT LIMIT value is perhaps a part of the problem .current detection sensibility and throtle sensibility another part .
can I detect it and see something with Realtime Data ? and adjust some parameters ?