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motor Position feedback using resolver

Prodigy 230 points

Replies: 10

Views: 1089

hI

  I came across a paper from TI which uses C2000 for position feed back using a resolver( spry212) . I was wondering if TI/anyone has sample project with the implementation?

Thanks

http://www.ti.com/lit/wp/spry212/spry212.pdf

  • yes, I have a full release package. let me check on what the plans are first though.

  • In reply to ChrisClearman:

    Great...! I f i could get the release pack it could save me some work :)

    Plans as in - TI plans as to release them..? Well it would be great help if you could let me know. Thank you.

  • In reply to sreejith menon:

    sreejth,

    it looks like we will be releasing this Resolver package (F2833x-FPU, F2803x-CPU, F2803x-CLA) only under signed license agreement. I don't have a date for this yet, but my guess is September/October. We're still taking feedback from some early evaluations.

    Are you specifically looking for SW, HW, or both?

     

  • In reply to ChrisClearman:

    Chris 

     If you don't mind can I get your official e-mail address so that I could clarify some of my requirements through  e-mail.

    Sreejith.

  • In reply to sreejith menon:

    sreejith,

    I sent you a friend request so that we can direct message.

  • In reply to ChrisClearman:

    Hi Chris,

    I am a student from Taiwan. I am currently studying this paper  from TI which uses C2000 for position feed back using a resolver( spry212)  and want to implement it. Does TI provide the source code for this implementation?

     

    Thanks,

    Kevin 

  • In reply to Kai-Wen Huang:

    Kevin,

    Install controlSUITE

    look at the projects here

    C:\ti\controlSUITE\development_kits\TMDSRSLVR_v1.0

    and note that they use a software library from here

    C:\ti\controlSUITE\libs\app_libs\motor_control\libs\resolver\v100

     

  • In reply to ChrisClearman:

    Chris,

    Thank you for quick response.

    Also, I was wondering if the output range of the resolver in this paper(spry212) is -1.65~1.65V sine/cos wave? (because the hardware TLV2772 performs the 1.65V level shifting to meet the 3.3-V A/D input range.)

    In this paper, the resolver is excited with a sine voltage of 10Vp-p at 10KHz but it doesn't mention about the transformation ratio of the resolver.

    Thanks,

    Kevin Huang

     

  • In reply to Kai-Wen Huang:

    Kevin,

    You are right about level shifting. 1.65V. Transformation ratio of resolver in tandem with the gain stage will fit the signal within ADC range, that is, 0V-3.3V. I think the resolver's trans ratio (pri:sec) is 3:1.

    rgds,

    ramesh

  • In reply to Ramesh Ramamoorthy:

    Ramesh,

    The OPA2209 for the low pass filter in stage 2, the output is set a limit to "0~15V" and the resolver in this paper is excited with a sine voltage of 10Vp-p at 10KHz.

    Is the resolver excited with a sine voltage range from 0~10V? 

    If the the resolver excited with a sine voltage range of 0~10V and the resolver's trans ratio (pri:sec) is 3:1, the output voltage range from the resolver would be 0~3.3V. The output has meet the ADC range and don't need to do the level shifting.

     

    Thank you for your response,

    Kevin

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