Comments (5)
I'm glad you are interested in my miniFOC project. I'm not a member of Simple FOC community but I actually learn a lot of techniques and knowledge from it. I once majored in EE when in undergraduate. Doing this project was purely out of personal interest.
Qfplib works well in Cortex-M3 series chips. I think TI's IQmath has been widely used in such chips that has no hardware float calculation capability. I just want to find a math library to substitute it. Actually, Qfplib works well. I used to debug my project and this math library visibly speeded up the calculation process, though not accurately as using those timing lib.
I hope my answer can assist your further study and work. -v- @Candas1
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Thank you.
I will try it, it seems Qfplib can be used to substitute match operators without changing the code (blog post).
I recently proposed this, maybe this is also useful for you.
SimpleFOC could probably run on your hardware.
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Great posts! Thanks for your suggestion. I think they will increase my understanding of Qfplib and help me to optimize the firmware.
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You have 3 shunts, you could also only use the 2 phase currents of the phases with lowest duty cycle and do the foc with 2 phase currents only.
That would prevent issues at high duty cycle.
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You have 3 shunts, you could also only use the 2 phase currents of the phases with lowest duty cycle and do the foc with 2 phase currents only.
That would prevent issues at high duty cycle.
I used to use the two phases version, but I encountered with the current phase sequence problem. Three phases control version cloud give me a chance to change the current phase sequence conveniently. Finally, I found that maybe my hardware design has some subtle mistakes that introduces noise into the current sense module. I didn't solve this problem. So this firmware version only uses the voltage control method.
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