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How to view duty cycle?

chao yang
Expert 1620 points

Hello 

I wonder how to view duty cycle of PWM when the system is running.

Is there some variable or some returned value of the function for duty cycle？

Thanks.

  • 0
    TI__Guru** 119680 points
    not exactly.
    //! \brief Defines the PWM data
    //!
    typedef struct _HAL_PwmData_t_
    {
    MATH_vec3 Vabc_pu; //!< the PWM time-durations for each motor phase

    } HAL_PwmData_t;

    which is in per unit

    another way is if you only care about the average voltage duty cycle you can review the gMotorsVars.Vs variable in proj_lab10a which will limit up to your .OverModulation variable and can be thought of as
    % duty cycle = Vs / 0.667