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TMS320F28069M: InstaSPIN change motor parameters on fly

Pavlin Stoyanoff
Expert 1715 points
Part Number: TMS320F28069M

Greetings! I`ve noticed that the motor parameters are hard stuck to the code(as defines). Is there a simple way to change them to variables without reworking the entire user.c file?

Thanks!

  • 0
    TI__Guru** 115420 points

    Yes. You don't need to change the variables in "gUserParams" object and call the functions to update the motor parameters for the InstaSPIN FAST estimators as below.

    gUserParams.motor_numPolePairs = New_motor_numPolePairs;

    gUserParams.motor_Rs = New_motor_Rs; // USER_MOTOR_Rs;
    gUserParams.motor_Ls_d = New_motor_Ls_d; // USER_MOTOR_Ls_d;
    gUserParams.motor_Ls_q = New_motor_Ls_q; // USER_MOTOR_Ls_q;
    gUserParams.motor_ratedFlux = New_motor_ratedFlux; // USER_MOTOR_RATED_FLUX;

    // Update the controller parameters
    CTRL_setParams(ctrlHandle, &gUserParams);
    CTRL_setUserMotorParams(ctrlHandle);