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Original question:

TMS320F280039C-Q1: FAST lib

TMS320F2800137: FAST & instaspin-foc

Yale Li 李耀先
Expert 4660 points
Part Number: TMS320F2800137
Other Parts Discussed in Thread: TMS320F28027

There is no FAST or instaspin-foc in the ROM of the TMS320F2800137 chip now.
In TMS320F2800137, FAST or instaspin-foc is implemented by calling library files. So what is the difference in performance between implementing FAST or instaspin-foc through library file calls and FAST or instaspin-foc in chip ROM?
Now using the instaspin-foc function of TMS320F2800137, it feels that the performance of instaspin-foc on TMS320F28027 is much worse. Why?

--

Thanks & Regards

Yale

  • 0
    TI__Guru** 115440 points
    Yale Li 李耀先 said:
    Now using the instaspin-foc function of TMS320F2800137, it feels that the performance of instaspin-foc on TMS320F28027 is much worse. Why?

    Did you have any detailed descriptions about this? Which applications? Which customer? What motor parameters?

  • 0 in reply to Yanming Luo
    TI__Expert 4660 points
    Yanming Luo said:
    Which customer?

    epropulsion

    Yanming Luo said:
    What motor parameters?

    #define USER_MOTOR1_TYPE                               MOTOR_TYPE_PM
    #define USER_MOTOR1_NUM_POLE_PAIRS        (3)
    #define USER_MOTOR1_Rr_Ohm                           (NULL)
    #define USER_MOTOR1_Rs_Ohm                          (0.054f)
    #define USER_MOTOR1_Ls_d_H                            (1.5e-04)//
    #define USER_MOTOR1_Ls_q_H                            (3.5e-04)//
    #define USER_MOTOR1_RATED_FLUX_VpHz       (0.2913768f)

    In TMS320F28027, only need to input the motor parameters, it can run well. But in TMS320F2800137, the motor parameters are entered, and it cannot be started at all.

  • 0 in reply to Yale Li 李耀先
    TI__Guru** 115440 points
    Yale Li 李耀先 said:
    epropulsion

    What application? Do they identify the motor parameters using the F280013x board and tune the related startup and control parameters?

    Yale Li 李耀先 said:
    In TMS320F28027, only need to input the motor parameters, it can run well. But in TMS320F2800137, the motor parameters are entered, and it cannot be started at all.

    As mentioned above.