微分方程组数值解方法，时间序列数据分析中的梅林变换工具，DC-DC部分采用定功率单环控制，pwm整流器的建模仿真，matlab程序运行时导入数据文件作为输入参数，LDPC码的完整的编译码。- Numerical solution of differential equations method, Time series data analysis Mellin transform tool, DC-DC power single-part set-loop control, Modeling and simulation pwm rectifier Import data files as input parameters matlab program is running, Complete codec LDPC code.