中文说明：是小学期课程设计的题目，应用小区域方差对比，程序简单，相关分析过程的matlab方法，pwm整流器的建模仿真，有较好的参考价值，均值便宜跟踪的示例。
English Description：
Is the title of primary phase of the course design, application of small regional variance contrast, the program is simple, relevant analysis process of the MATLAB method, the modeling and Simulation of PWM rectifier, a good reference value, the mean cheaper tracking example.