Predict_duffing_with_bp

单极性PWM控制方式Simulink仿真，很简单，便于电力电子初学者学习，里面还加了一个模拟滤波器，也很简单，但想法非常重要(Unipolar PWM control Simulink simulation, very simple, easy for beginners to learn power electronics, which also added a simulated filter, is also very simple, but very important idea)

Gradient Adaptive Laguerre Lattice Filter( Description： Implements the order recursive adaptive laguerre filter from Fejzo and Lev-Ari (1997). Advantages: *Fewer parameter to model than FIR filters modeling long impulse responses *guaranteed stability, unique global minimum, small number of parameter for prescribed modelling error *numerically robust & and low computational complexity ( O(M) ). *Fast convergence (RLS equivalent) with no apriori learning rate required *Order recursive, so filter coefficients are uncorrelated with each other, allowing for modular implementation. Setting the pole parameter to 0 yields the standard classical gradient adaptive FIR algorithm. Includes simple example on cross-talk resistant echo cancellation to show how to use it. )

老外写的一个卡尔曼的matlab实现代码，直观易懂，比较适合学生学习理解(Kalman filter simulation for a vehicle travelling along a road.)

EncodedArrayItem extends OffsettedItem.

使用二边逐次修正法来求解TSP（旅行商问题）问题的较有解，同时可以控制迭代求解的次数(Successive correction method using the two sides to solve TSP (TSP) problem than a solution, while controlling the number of iterative solution)

课程设计中实现matlab的最优化设计，程序代码包括各种算法，如最速下降法 共轭梯度法，牛顿法，修正牛顿法，拟牛顿法，信赖域法，显式最速下降法， MDOMxw梯度投影法，修正G－N法，基本粒子群算法，带压缩因子的粒子群算法，权重改进的粒子群算法，ZMGGiit二阶粒子群算法等等。 (Curriculum design to achieve matlab optimization design, program code includes a variety of algorithms, such as the steepest descent method conjugate gradient method, Newton s method, modified Newton method, quasi-Newton method, trust region method, explicitly steepest descent method, MDOMxw gradient projection law, amendment G-N method, particle swarm algorithm, particle swarm algorithm with compression factors, weights improved particle swarm optimization, ZMGGiit second-order particle swarm optimization and so on. )

说明：  交通流量预测数据集，某高速公路按天收集的交通流量。(Traffic flow forecasting data set, the traffic flow collected daily by a highway.)

在同温度和和照度下，n改变时，光生电流不变。(when the temperature and irradiation are the same the output photocurrent Iph of the same piece of solar cell remains constant although the diode quality factors and reverse saturation currents are different.)

说明：  利用Matlab实现数字信号处理fft变换的教程，讲解非常清楚(FFT with Matlab method)

利用该代码可进行非线性光学材料的闭孔Z扫描曲线拟合，给出材料的三阶非线性光学极化率(theoretical to closed aperture Z scan)