BLDC: Delete the Alignment phase of the encoder

[JulesC]

Hi all,

I noticed that when using the encoder, the motor undergoes an alignment phase during which it completes a rotation until it reaches the position where the Index Z signal is triggered.

I was wondering if it's possible to skip this alignment phase by adding the Hall sensors (like with the B-G473E combined with the STEVAL-LVLP01 board), and if so, what should I specify in the Workbench or in the Code?

Regards,
Jules

[GMA]

Hello @JulesC,

As mentioned in the Alignment settings chapter of the User manual Quadrature Encoder sensor feedback processing documentation, absolute information is required to perform field-oriented control. Therefore, it cannot be skipped in the current MCSDK implementation.

[JulesC]

Hello @GMA,
Sorry for the late reponse.
Is it possible for the Quadrature Encoder to determine the absolute information using Hall sensors? For instance, could the system start in Hall sensor mode and then switch to the Quadrature Encoder once the index is found or the position is synchronized?

Regards,
Jules

[GMA]

Hello @JulesC,

In the current MCSDK implementation, the speed sensor switch is available, however, for the Encoder sensor, alignment is required.