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ti矢量控制例程求解

 

_iq K1=_IQ(0.998);  //Offset filter coefficient K1: 0.05/(T+0.05);
_iq K2=_IQ(0.001999); //Offset filter coefficient K2: T/(T+0.05);

#ifdef DSP2833x_DEVICE_H
 clarke1.As=((AdcMirror.ADCRESULT1)*0.00024414-offsetA)*2*0.909; // Phase A curr.
 clarke1.Bs=((AdcMirror.ADCRESULT2)*0.00024414-offsetB)*2*0.909; // Phase B curr.
 #endif                     // ((ADCmeas(q12)/2^12)-offset)*2*(3.0/3.3)  

if (IsrTicker>=5000)
     { 
      
      #ifdef DSP2833x_DEVICE_H
      offsetA= K1*offsetA + K2*(AdcMirror.ADCRESULT1)*0.00024414;    //Phase A offset
      offsetB= K1*offsetB + K2*(AdcMirror.ADCRESULT2)*0.00024414;    //Phase B offset
      offsetC= K1*offsetC + K2*(AdcMirror.ADCRESULT3)*0.00024414; ;   //Phase C offset
      #endif
  }

请教这段程序怎么解啊,(3.0/3.3)是什么意思