Hello,
I have a question on the InstaSPIN-FOC Lab project for F28004xC in MotorControl_SDK.
Particularly it is on the is08_overmodulation project.
The function of mainISR() in the file of is08_overmodulation.c contains the following codes:
PI_run_series(piHandle_spd,
estInputData.speed_ref_Hz,
estOutputData.fm_lp_rps * MATH_ONE_OVER_TWO_PI,
0.0,
(float32_t *)(&(Idq_ref_A.value[1])));
Here the second parameter of "estInputData.speed_ref_Hz" is the refValue and the third parameter of "estOutputData.fm_lp_rps * MATH_ONE_OVER_TWO_PI" is the fbackValue.
As far as I know, "estInputData.speed_ref_Hz" represents the electrical frequency of the motor in unit of cycle/sec while "estOutputData.fm_lp_rps * MATH_ONE_OVER_TWO_PI" represents the mechanical frequency of the motor in unit of cycle/sec.
Therefore for 4 pole motors, the value of "estInputData.speed_ref_Hz" may be twice of "estOutputData.fm_lp_rps * MATH_ONE_OVER_TWO_PI".
Is this the way of using PI_run_series() as the speed controller?
Thank you for your guidance.
With regards,
JS Yoo
