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My interest was mainly in commutation order or its biproducts. Hence have kept the sampling frequency 100 times of highest motor mechanical frequency.
I understand that as a first attempt everybody will try to validate the signal and see if the components like 7, 19 and 36 could be just noise...
I am sure that there is no measurement error or aliasing, actually for accuracy we have sampled much higher than highest frequency. windowing was done for a constant velocity region so that also is not an issue.
Thanks :D
Yes I meant 12 slots in the slip ring. Unfortunately I wont be able to share the picture which i really wanted to, however, what orders I have mentioned are harmonic orders with relatively much higher magnitude compared to the many other orders with very less amplitude these happen to be the...
Hello guys,
I got a small 12V DC brushed motor and collected its current data. After performing the FFT of the signal, I found there are multiple orders present many of which I didn't expect. as motor has 12 commutators I saw a 12th order and maybe due to shakiness of brushes I saw some 24th...
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