说明：  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 the timing of the carrier and the fundamental failure to understand the generation of a cross, and later been to some studies, done sine wave frequency from 10HZ ~ 400HZ without distortion, and play a part of the requirement is 20 ~ 100HZ adjustable.)