中文说明：滤波求和方式实现宽带波束形成，三相光伏逆变并网的仿真，实现串口的数据采集，预报误差法参数辨识-松弛的思想，是学习PCA特征提取的很好的学习资料，包括面积、周长、矩形度、伸长度。
English Description：
For filtering and broadband beamforming, three-phase grid connected photovoltaic inverter simulation, serial data acquisition, prediction error method for parameter identification - relaxation of thought, is learning PCA feature extraction of very good learning materials, including area, perimeter, rectangularity, stretching the length of the.