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C2000WARE-MOTORCONTROL-SDK: More detailed descriptions for EST module, like EST_SetBemf_SF()

Cameron Wutzke
Intellectual 2001 points
Part Number: C2000WARE-MOTORCONTROL-SDK

Hi!

Looking through the EST module: https://dev.ti.com/tirex/content/C2000Ware_MotorControl_SDK_4_02_00_00/docs/html/libraries_html/group___e_s_t.html#ga6a8e5d4d78fce0d052d20bc144ed5bf7

There are many functions that generically state "Configures the controller for each of the estimator states." Where can I find more details about these functions?

For example EST_Set_Bemf_sf() has a generic description. What does this function do?

Thanks

Cameron

  • 0
    TI__Guru** 109810 points

    You may find the detailed description for most the functions in  the InstaSPIN-FOC and InstaSPIN-MOTION User's Guide.

    As descibed in the header file and the function's name for  EST_Set_Bemf_sf()  that is used to set the coefficient to estimate the BEMF voltage.

  • 0 in reply to Yanming Luo
    TI__Intellectual 2001 points

    Hey Yanming,

    I'm looking in the user guide you linked, I can't find the setBemf function. Thanks!

  • +1 in reply to Cameron Wutzke
    TI__Guru** 109810 points

    Yes, it's new function for low inductance motor without description in the user's guide. You don't need to change the default settings, and you can find the comments in the user_mtr1.h as below.

    //! \brief Defines the scale factor for the flux estimation
    //! the default value is 1.0f, change the value between 0.1f and 1.25f
    //!
    //#define USER_M1_EST_FLUX_HF_SF (0.120f)
    //#define USER_M1_EST_FLUX_HF_SF (0.250f)
    #define USER_M1_EST_FLUX_HF_SF (1.00f)

    //! \brief Defines the scale factor for the frequency estimation
    //! the default value is 1.0f, change the value between 0.5f and 1.5f
    //!
    #define USER_M1_EST_FREQ_HF_SF (1.00f)

    //! \brief Defines the scale factor for the bemf estimation
    //! the default value is 1.0f, change the value between 0.50f and 1.25f
    //!
    #define USER_M1_EST_BEMF_HF_SF (1.00f)