HFI question

Eric Ma

Intellectual 2630 points

Other Parts Discussed in Thread: MOTORWARE

Hi C2000 champion

A servo customer want to try HFI for motor IDP. customer have a question about HFI parameters as below:

// HFI frequency (timing) parameters

hfi1.Squ_PRD_set = INDEX_CNT; /* 16 IPD // 8 low speed for Bosch // 1 for E-bike */

hfi1.HFI_Time1 = 400;

hfi1.HFI_Time2 = 450;

hfi1.base_wTs = _IQ(BASE_FREQ*T);

Customer want to know how to tuning HFI_Timer1 and HFI_Timer2 according their hardware and motor?

Another question is whether have a HFI parameters tuning user guide?

Eric

over 9 years ago

0 Ramesh Ramamoorthy over 9 years ago

TI__Mastermind 27240 points

If the customer got access to the hfi.lib library, they would have received a user guide for tuning this.

0 Eric Ma over 9 years ago in reply to Ramesh Ramamoorthy

TI__Intellectual 2630 points

Hi Ramesh

Do you mean this document DMC MATH_HFI_v13.0.1.pdf ?

I checked this document, but it didn't say how to modify the parameters according customer hardware and power level.

Another question is, customer want to migrate HFI to F28335, and use FPU. But the HFI.lib is built using "rts2800_ml.lib", so there would have build error when use FPU. Do we have a float version HFI?

Eric

0 Ramesh Ramamoorthy over 9 years ago in reply to Eric Ma

TI__Mastermind 27240 points

Eric,

It mentions at the end in ZLSPD technical description. It gives an outline of how to set up the tuning parameters. Actually, the tuning is not very straight forward and requires a lot of time tweaking various parameters.
If you need HFI.lib for F28335, pls confirm with Chris about me sending it out to you as it is covered by NDA. If the customer already has an NDA for the piccolo part, then no problem and I can send it.

rgds,
ramesh

0 Ramesh Ramamoorthy over 9 years ago in reply to Ramesh Ramamoorthy

TI__Mastermind 27240 points

Eric,

The version you mentioned, v13.0.1, is not latest. Will send the latest one in email.

rgds,
Ramesh

0 Eric Ma over 9 years ago in reply to Ramesh Ramamoorthy

TI__Intellectual 2630 points

Ramesh
Thanks for your reply.

0 lorenzo mazza over 9 years ago in reply to Eric Ma

Prodigy 70 points

Gentlemen,
i have been evaluating the instaspin and motorware capabilities on an internal project that focuses on a high saliency ipm (ratio greater than 4) and wow the results are amazing so fare considering the little time i have stent on it. However i am kind of stuck on the use of the hfi + ipd library because i don't know how to tune all the parameters. Please let me know if we need to execute a NDA in order for me to get more detailed guide on how to use the libraries and the thecquinique that is actually implemented.
many thanks
lorenzo

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