中文说明：插值与拟合，解方程，数据分析，数据模型归一化，模态振动，脉冲响应的相关分析算法并检验，数学方法是部分子空间法，与理论分析结果相比，pwm整流器的建模仿真。
English Description：
Interpolation and fitting, solving equations, data analysis, data normalization model, vibration mode, the impulse response of the related analysis algorithm and test, mathematical method is part of the sub space method, and theoretical analysis results compared, PWM rectifier modeling and simulation.