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关于28379d快速电流环程序里面扇区判断的问题



在程序的SVGENDQ_MACRO模块里面有这段程序

v.tmp1= v.Ubeta;              

v.tmp2= _IQdiv2(v.Ubeta) + (_IQmpy(_IQ(0.866),v.Ualpha));     

v.tmp3= v.tmp2 - v.tmp1;

这个地方应该是相电压的CLARKE反变换,可是我怎么推导总是和这里的v.tmp2差个负号,不知道是哪里的问题