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S912ZVML Hall Sensored BLDC motor

Question asked by PRATIBHA SURABHI on Dec 6, 2017

Hi,

 

I am working on MTRCKTSBNZVM128 eval kit .

I am running Hall sensored motor algorithm firmware.

The sample code is provided by NXP itself.

 

Query is only 

Motor RPM calculation I found is to be incorrect.

Observing the HallPeriod array and Hall patterns,only 3 Hall pattern sequences are observed (4,5,6).

So the commutation is found to be not 120 commutation.

 

Please guide as to how to rectify the commutation issue,such that all hall patterns are observed.

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