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TMS320F28335: 求解,电机例程中clarke1.As与真实电流值之间的关系

Part Number: TMS320F28335

clarke1.As=((AdcMirror.ADCRESULT1)*0.00024414 -offsetA)*2*0.909; // Phase A curr.

上式是电机例程中的电流标幺值,请问如何通过这个标幺值计算电机的真实电流呢?

这个是我的电路图,PHW+与PHW-接在电机W相开关管处,采样电阻为0.02欧姆

上图放大倍数是8.32,我计算得到的电流公式为 IA = 9.91-6*((AdcMirror.ADCRESULT1)*0.00024414*3);不知道正不正确,请大神看下,困扰了我好久好久了