haar 小波电网滤波模拟 可作为电力电子课程设计 DATAPLAY.M 为信号源 DISPART.M 为分辨1函数 DISPART1.M 为分辨2函数 RECOVER1.M 为还原函数，输出滤波结果-haar wavelet filter simulation grid can be used as power electronics curriculum design DATAPLAY.M to distinguish between a signal sourc