基于ST的foc控制库2.0中占空比计算的问题

你好我好大家好！提问时间：2014-7-23 11:51 /

最近在搞基于stm32的pmsm控制，有个问题看不明白，有没有前辈们可以指导一下啊，不胜感激：在这个函数中void SVPWM_3ShuntCalcDutyCycles (Volt_Components Stat_Volt_Input)的矢量占空比的计算公式是怎么推倒过来的啊，：

case SECTOR_1:
            hTimePhA = (T/8) + ((((T + wX) - wZ)/2)/131072);
         hTimePhB = hTimePhA + wZ/131072;
         hTimePhC = hTimePhB - wX/131072;
case SECTOR_2:
            hTimePhA = (T/8) + ((((T + wY) - wZ)/2)/131072);
         hTimePhB = hTimePhA + wZ/131072;
         hTimePhC = hTimePhA - wY/131072;

case SECTOR_3:
            hTimePhA = (T/8) + ((((T - wX) + wY)/2)/131072);
         hTimePhC = hTimePhA - wY/131072;
         hTimePhB = hTimePhC + wX/131072;

case SECTOR_4:
            hTimePhA = (T/8) + ((((T + wX) - wZ)/2)/131072);
            hTimePhB = hTimePhA + wZ/131072;
            hTimePhC = hTimePhB - wX/131072;

case SECTOR_5:
            hTimePhA = (T/8) + ((((T + wY) - wZ)/2)/131072);
            hTimePhB = hTimePhA + wZ/131072;
         hTimePhC = hTimePhA - wY/131072;
case SECTOR_6:
            hTimePhA = (T/8) + ((((T - wX) + wY)/2)/131072);
hTimePhC = hTimePhA - wY/131072;
         hTimePhB = hTimePhC + wX/131072;