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Resolver(sensor for Electric Vehicle Motor) Question

Joseph Lee90700
Prodigy 140 points

  To excite Resolver, MCU should provide "sine wave" to resolver.

I could find out "SWG(sine wave generator)" in MCU at MCU of competitor .

Unfortunately I did not find out this module in TMS570.

How to implement this funtion at TMS570 ?

  

  • 0
    Expert 1910 points

    Hi Joseph,

    If you want to generate an analogue output signal you will need to use an external device. The TMS570 comes with lots of SPI interfaces so I would recommend using a DAC with an SPI interface provided that you don't need too high a frequency.

    Page 3 of the MDK I/O development board schematic shows an example of hooking up the processor to a DAC. Schematics for the MDK development board can be downloaded from here: http://processors.wiki.ti.com/index.php/TMS570_MDK_Kit#MDK_Board_Schematic.

    Obviously you will need to write the code to periodically send SPI signals to the DAC.

    I hope this helps.

    Regards,

    Richard