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FOC Control and Resolver input

Question asked by powell.david.002 on Jul 29, 2014
Latest reply on Aug 12, 2014 by Dino

I have a PMSM which I'm planning to run sensor-less.

In case I run into problems with the sensor-less the motor I'm using also has a resolver fitted. I have a Resolver Decoder from analog devices so I'm wondering if I can read this over the SPI bus and input it to the FOC algorithim?  Or should i use the quadrature outputs from the resolver deocder IC and run these digital inputs into the STM32.

If i had more time I'd play around with some sample and hold circuits and use the spare ADC to sample the SIN/COS signals coming from the resolver and decode them into position in the STM32. But that's a little bit off for now.

David Powell