中文说明： BP神经网络用于函数拟合与模式识别，采用偏最小二乘法，应用小区域方差对比，程序简单，包括四元数的各种计算,感应双馈发电机系统的仿真，调试通过可以使用。
English Description：
BP neural network for function approximation and pattern recognition, using partial least squares method and application of small regional variance contrast, the program is simple, including quaternion calculation and Simulation of doubly fed induction generator system, debugging can use.