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TMS320F28069M: TMS320F28069M LaunchPad XL motorware support

Pooja Chaurasiya
Prodigy 75 points
Part Number: TMS320F28069M
Other Parts Discussed in Thread: MOTORWARE, DRV8301

I am using LaunchPad XL TMS320F28069M and using TI motorware to program, currently program used is Proj_Lab_12b. I am defining a motor parameter as shown in image, but from somewhere it is taking some default values(shown in another image).

Can anyone tell from where my controller is reading value (shown in image in table format)? Where in the code these values are written which I am not able to find?

Hoping to hear from you soon!

Thanks in Advance

  • 0
    TI__Guru** 115560 points

    You may take a look at the user's guide as below. The constant parameters will be assigned to a struct variables in user.c.

    InstaSPIN-FOC and InstaSPIN-MOTION User's Guide

    https://www.ti.com/lit/spruhj1

     

    instaspin_labs.pdf at C:\ti\motorware\motorware_1_01_00_18\docs\labs

  • 0 in reply to Yanming Luo
    Prodigy 75 points

    Hello ,

    I have ensured the process mentioned in the document. 

     

    I also very oftenly face another issue of random values read by the controller as shown in below image. Can you please help me with understanding why do I get this issue and how can I resolve it?



    Thanks & Best Regards 
    Pooja 

  • 0 in reply to Pooja Chaurasiya
    TI__Guru** 115560 points
    Pooja Chaurasiya said:
    Can you please help me with understanding why do I get this issue and how can I resolve it?

    Are you using the right device like F28069M for this project? Any change did you make in the example lab project?

  • 0 in reply to Yanming Luo
    Prodigy 75 points

    Yes, I am using C2000 LaunchPad XL TMSF28069M with DRV8301. No change I made. Just to ensure that I uninstalled the MW and again installed in my system and checked by building the Lab_12b again.  And only chenged the below defined data values. It still shows the random values in the expression of gUserParams.

    #define USER_MOTOR_TYPE                                                         MOTOR_Type_Pm
    #define USER_MOTOR_NUM_POLE_PAIRS                                      (2)
    #define USER_MOTOR_Rr                                                                (NULL)
    #define USER_MOTOR_Rs                                                                 (0.04)
    #define USER_MOTOR_Ls_d                                                            (0.0000075)
    #define USER_MOTOR_Ls_q                                                           (0.0000075)
    #define USER_MOTOR_RATED_FLUX                                              (0.02)
    #define USER_MOTOR_MAGNETIZING_CURRENT                        (NULL)
    #define USER_MOTOR_RES_EST_CURRENT                                    (3.0)
    #define USER_MOTOR_IND_EST_CURRENT                                  (-3.0)
    #define USER_MOTOR_MAX_CURRENT                                          (5.0)
    #define USER_MOTOR_FLUX_EST_FREQ_Hz                                 (20.0)
    #define USER_MOTOR_ENCODER_LINES                                      (1024.0)
    #define USER_MOTOR_MAX_SPEED_KRPM                                   (20.0)
    #define USER_SYSTEM_INERTIA                                                        (0.02)
    #define USER_SYSTEM_FRICTION                                                      (0.01)

  • 0 in reply to Pooja Chaurasiya
    TI__Guru** 115560 points

    If you don't change anything, just use the original labs like lab12a or lab12b, what happens?

  • 0 in reply to Yanming Luo
    Prodigy 75 points

    Then it shows the expected values whatever is defined in the code.

    But practically I won't be able to use the same parameter to run another motor, right? I will have to update parameters for that right? 

  • 0 in reply to Pooja Chaurasiya
    TI__Guru** 115560 points

    I guess that you should not only update the motor parameters only in the original lab, you should change some of the struct object variable like USER_Params.

    So please use the original lab to have a check.

  • 0 in reply to Yanming Luo
    Prodigy 75 points

    Had one new doubt, where do we find the option of defining which QEP we want to use, QEP1 or QEP2 in the code? (lab_12a)

  • 0 in reply to Pooja Chaurasiya
    TI__Guru** 115560 points

    Using QEP1 by default if you connect the boostxl board on the site 1 of the luanchXL.

  • 0 in reply to Yanming Luo
    Prodigy 75 points

    If I use original lab then my motor doesn't rotate as expected, it just vibrates and draws the whole power supply limit current (Proj_Lab 12b). 

    And even if i update my motor parameter in user_J1.h, upon running the code it shows some default value defined for it in the expression window.

  • 0 in reply to Pooja Chaurasiya
    TI__Guru** 115560 points

    Please take a look at the lab user's guide and follow it to run the lab2c to identify the motor parameters and lab12a to identify the inertia and friction first, and make sure that the encoder and motor wires are connected correctly for lab12a.

    instaspin_labs.pdf at C:\ti\motorware\motorware_1_01_00_18\docs\labs