Part Number: TMS320F28069M
Hello TI community,
As mentionned in the http://e2e.ti.com/support/microcontrollers/c2000/f/171/t/507801?RsOnline-oscillating#pi320995=2, we are facing a similar issue.
RsOnline estimation works perfectly most of the time, but sometimes it diverges : it reaches 200% of the expected value and leads to a bad control...
We tried to change SlowRotatingAngle frequency and RsOnline filter parameters (keeping the ratio between them as in the datasheet) but it is very painful.
Can we get some help ?
Can we get some details about the feature and the source code for this feature ?
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In reply to Yanming Luo:
Thanks for the reply.
1) We worked a lot on the RsOnline filter and found that RsOnline returned by the estimator function is close to the voltage filter output over the current filter output, can you confirm ? Can you precise also the input and the units of the outputs of the filter please ?
2) We found that there is something which discards or smooths the returned value by the estimator, can you add some details ? Our issue is still a divergence with a slow rotating angle at 2s period. Is there a rule concerning the SlowRotatingAngle frequency and the filter parameters to respect ?
3) We also found that when we set RsOnlineFilter parameters, filter seems to reset, can you detail ?
4) In the datasheet, §15.8.3, some functions are mentionned to adjust delta but are not available in the TMS320F28069M, is it normal ?
Thanks for your help,
In reply to Robin Maubert:
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