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

Cameron Wutzke

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

over 1 year ago

0 Yanming Luo over 1 year ago

TI__Guru** 110650 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 Cameron Wutzke over 1 year ago in reply to Yanming Luo

TI__Intellectual 2361 points

Hey Yanming,

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

+1 Yanming Luo over 1 year ago in reply to Cameron Wutzke

TI__Guru** 110650 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)

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