应用小区域方差对比，程序简单，包括AHP，因子分析，回归分析，聚类分析，pwm整流器的建模仿真，主要是基于mtlab的程序，FIR 底通和带通滤波器和IIR 底通和带通滤波器，通过matlab代码。- Application of small area variance comparison, simple procedures, Including AHP, factor analysis, regression analysis, cluster analysis, Modeling and simulation pwm rectifier Mainly based on the mtlab procedures, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, By matlab code.