• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 82 subscribers
  • Views 215 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TMS320F28374D: question about SFRA

Julia Li
Expert 4755 points

Part Number: TMS320F28374D
Other Parts Discussed in Thread: SFRA

Tool/software:

Hi Champs,

Now my customer would like to check: Can SFRA support inner loop sweeping in dual-loop control? Also, is the current principle of SFRA's based on calculating the open-loop plant gain through closed-loop gain?

What is the accuracy of SFRA?

Thanks!

Best regards,

Julia

  • +1
    TI__Intellectual 1710 points

    Julia,

    Yes, it supports implementation of the inner loop in a dual-loop control structure. The underlying principle involves calculating the open-loop plant gain (G) and the feedback transfer function (H). This allows for the application of the closed-loop gain using the expression: GH / (1 + GH).

    The accuracy of the SFRA depends on the number of frequency samples collected within the desired frequency response range. It operates using 64-bit floating-point precision, ensuring a high level of accuracy.

    Thanks & Regards,
    Shashank