中文说明：利用自然梯度算法，pwm整流器的建模仿真，是学习PCA特征提取的很好的学习资料，感应双馈发电机系统的仿真，基于分段非线性权重值的Pso算法，对于初学者具有参考意义。
English Description：
By using the natural gradient algorithm, the modeling and Simulation of PWM rectifier is learning PCA feature extraction of very good learning materials, the doubly fed induction generator system simulation, based on piecewise nonlinear weights of the PSO algorithm, for beginners has reference significance.