当时在参加全国电子设计大赛前，研究逆变器时编写的软件SPWM波的产生。前期因对载波和基波的时序交叉的产生不懂失败，后来进过一番研究后，做到了正弦波频率从10HZ~400HZ不失真，而发挥部分要求是20~100HZ可调。-At that time in front of the National Electronic Design Contest, the study of software written inverter SPWM wave generated. Early due to th