DRV8316: current loop noise problem

our project use speed loop and current loop, current loop use FOC.

there is a problem, when speed loop goal is set to zero, current loop iq goal value is zero, the motor stop, but there are some noise comes from the motor. Under this condition, I see the current loop iq feedback is still changing, so the current loop PI regulator still output small UQ value to SVPWM, the 3 three phase inverter still works, maybe this is the soure of the noise. 

so is there some method to solve the noise problem when speed goal is set to zero? thanks a lot 

Links：

Unfortunately, we also don't have the guidance for you.

To solve your issue, we recommend that you post your question on the English E2E support forums（https://e2e.ti.com/p/addpost）, which will be assisted by experienced experts.

TRANSLATE with x

English

Arabic
Hebrew
Polish

Bulgarian
Hindi
Portuguese

Catalan
Hmong Daw
Romanian

Chinese Simplified
Hungarian
Russian

Chinese Traditional
Indonesian
Slovak

Czech
Italian
Slovenian

Danish
Japanese
Spanish

Dutch
Klingon
Swedish

English
Korean
Thai

Estonian
Latvian
Turkish

Finnish
Lithuanian
Ukrainian

French
Malay
Urdu

German
Maltese
Vietnamese

Greek
Norwegian
Welsh

Haitian Creole
Persian

TRANSLATE with

COPY THE URL BELOW

Back

EMBED THE SNIPPET BELOW IN YOUR SITE

Enable collaborative features and customize widget: Bing Webmaster Portal
Back

This page is in Italian

Translate to Simplified Chinese

Afrikaans
Albanian
Amharic
Arabic
Armenian
Azerbaijani
Bengali
Bulgarian
Catalan
Croatian
Czech
Danish
Dutch
English
Estonian
Finnish
French
German
Greek
Gujarati
Haitian Creole
Hebrew
Hindi
Hungarian
Icelandic
Indonesian
Italian
Japanese
Kannada
Kazakh
Khmer
Korean
Kurdish (Kurmanji)
Lao
Latvian
Lithuanian
Malagasy
Malay
Malayalam
Maltese
Maori
Marathi
Myanmar (Burmese)
Nepali
Norwegian
Pashto
Persian
Polish
Portuguese
Punjabi
Romanian
Russian
Samoan
Simplified Chinese
Slovak
Slovenian
Spanish
Swedish
Tamil
Telugu
Thai
Traditional Chinese
Turkish
Ukrainian
Urdu
Vietnamese
Welsh

Always translate Italian to Simplified Chinese Never translate Italian Never translate e2echina.ti.com

,

Jason：

OK, thanks

,

Links：

Our pleasure