chap3

用不同方法绘制六边形，组成蜂窝图，程序通过MATLAB7.1测试过(Hexagon drawn in different ways to form a cellular map, the program tested by MATLAB7.1)

改进的预测控制，结合了一般的算法，但增加了预测控制对象是否稳定的判断(predictive control)

continues analysis of discrete signal, not integer shifting of a discrete signal

模糊PID调节，并且通过与普通PID调节对比得出较好的效果(Fuzzy PID control, and by contrast with the ordinary PID regulator obtained better results)

说明：  压缩感知 根据匹配追踪算法自制的代码 直接调用即可，内有中文注释 ( Compressive sensing， the code is made from Match pursuit algorithm )

基于传递矩阵的方法，计算转子动力学系统临界转速及振型(Critical Speed and Vibration Mode of Rotor Dynamics System Based on Transfer Matrix Method)

用平面波展开法求二维光子晶体能带图，使用matlab编程(Plane wave expansion method for the energy band diagram of two-dimensional photonic crystals)

实现定时控制，非常实用，可以直接调用，有需要的可以下载(Achieve timing control, very practical, you can directly call the need to be downloaded)

子彈 可以用C++ code做出子彈並放進射擊遊戲。(Bullets can make use C++ code and put a bullet shooter.)

BP神经网络容易陷于局部极小值，PSO算法在无约束非线性函数优化方面性能优越，通常可以直接找寻到全局最优解，即使不能搜多到全局最优解，也距离全局最优点不远。当然，基本PSO算法陷入局部极值也是有的。对于这个缺点目前还没有找到比较有效、省市的解决方案。本案例实现利用PSO算法和BP算法共同训练神经网络，先将网络进行PSO算法训练，然后BP算法接着进行小范围精细搜索，PSO算法训练神经网络的本质就是将输出误差函数（即能量函数）看成目标函数，PSO对能量函数进行全局寻找最小值。(BP neural networks are prone to local minimum values. The PS algorithm has superior performance in the optimization of unconstrained nonlinear functions. It can usually find the global optimal solution directly. Even if it can not find more global optimal solutions, it is not far from the global best. Of course, there is also a local extreme of the basic PO algorithm. For this shortcoming, there is no more effective, provincial and municipal solution. This case realizes the use of the SO algorithm and the BP algorithm to train the neural network. First, the network is trained in the SO algorithm, and then the BP algorithm is followed by a small range of fine searches. The essence of the PO algorithm training neural network is to regard the output error function(ie, the energy function) as the objective function, and the PO seeks a global minimum value for the energy function.)