是学习PCA特征提取的很好的学习资料，使用高阶累积量对MPSK信号进行调制识别，pwm整流器的建模仿真，数据模型归一化，模态振动，有借鉴意义哦。- Is a good learning materials to learn PCA feature extraction, Using high-order cumulants of MPSK signal modulation recognition, Modeling and simulation pwm rectifier Normalized data model, modal vibration, There are reference Oh.