TMS320F28027: angle compensation

Hi,

Have you tuned the compensation coefficient? Pointing out a few references below:

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

https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/999873/tms320f280049c-q1-angle-delay-compensation-function-difference-between-motorware-and-motorcontrolsdk 

Best,

Kevin

Hello, E:\ti\motorware\motorware_1_01_00_18\sw\solutions\instaspin_foc\boards\boostxldrv8305_revA\f28x\f2802xF\projects\ccs\proj_lab11a
Angle compensation is shown in the figure,

That E: \ ti \ motorware \ motorware_1_01_00_18 \ sw \ solutions \ instaspin_foc \ boards \ boostxlddrv8305_devA \ 8x 802xF \ projects \ ccs \ proj_1ab10a
How should I compensate? No,
phasor.value[0] = _IQcosPU(angle_pu);
phasor.value[1] = _IQsinPU(angle_pu); code

Hi,

You can try tuning the compensation factor for your motor / hardware in the angleDelayComp() function declaration, though this normally isn't required. See line of code below:

_iq angleCompFactor = _IQ(1.0 + (float_t)USER_NUM_PWM_TICKS_PER_ISR_TICK * 0.5); // 0.5 is default value

Best,

Kevin

Hello, mainly I don't know where to put this code in Example 10a.

Hi,

It'd be in CTRL_run() function that's called in the ISR. See sub functions within that code below.

          if(EST_getState(obj->estHandle) >= EST_State_MotorIdentified)
            {
              // run the online controller
              CTRL_runOnLine_User(handle,pAdcData,pPwmData);
            }
          else
            {
              // run the online controller
              CTRL_runOnLine(handle,pAdcData,pPwmData);
            }

Best,

Kevin