Stutter start

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Tue, 2021-08-17 14:30

benha

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Joined: 2019-08-05 21:52

Posts: 3

Stutter start

Howdy!

I'm working on a project that uses a VESC to control a propeller on a dive propulsion vehicle. Normal controllers are hard to deploy so I'm using two switches with different resistors to create a low and high throttle setting in ADC mode.

When I start up, I get a quick stutter I'd like to massage out of the system. Video here:

https://youtu.be/H1j6QDoRWao

Anyone have suggestions for what's going on and how I can fix it?

Thanks!

-Ben

Fri, 2021-08-20 17:27

benha

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Last seen: 3 years 3 months ago

Joined: 2019-08-05 21:52

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FWIW, it seems this only happens in Duty Cycle mode. When I switch it to Current I get smooth starts.

Fri, 2021-08-27 19:49

vadicus

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Joined: 2018-08-17 07:26

Posts: 431

The video shows no stutter per se. A quick reverse move seems to be the way to detect the rotor position in sensorless mode. It's normal.

NextGen FOC High voltage 144v/34s, 30kw (https://vesc-project.com/node/1477)

Wed, 2021-09-08 13:45

flyingbrike

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Joined: 2020-05-14 15:39

Posts: 9

My stottering went away when i activated HFI mode

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