coding

牛顿法测试程序，包含线搜索和不含线搜索时算法比较。(newton algorithm with linear and without linear search.)

为了提高三级倒立摆系统控制的响应速度和稳定性,在设计Mamdani 型模糊推理规则控制器控制倒立摆系统稳定的基础上, 设计了一种更有效率的基于Sugeno 型模糊推理规则的模糊神经网络控制器。该控制器使用BP 神经网络和最小二乘法的混 合算法进行参数训练,能够准确归纳输入输出量的模糊隶属度函数和模糊逻辑规则。通过与Mamdani 型控制器的仿真对比, 表明该Sugeno 型模糊神经网络控制器对三级倒立摆系统的控制具有良好的稳定性和快速性,以及较高的控制精度。(In order to improve the three-level control of inverted pendulum system response speed and stability, in the design of Mamdani-type fuzzy inference rules of the system controller to control the stability of inverted pendulum on the basis of a more efficient design based on Sugeno-type fuzzy inference rules of fuzzy neural network controller. The controller is the use of BP neural network and hybrid least squares training algorithm parameters can be accurately summed up the amount of input and output fuzzy membership function and fuzzy logic rules. Mamdani-type controller with a simulation comparison shows that the Sugeno-type fuzzy neural network controller for the three-tier control of inverted pendulum system with good stability and fast, as well as a higher control precision.)

利用直接法和间接法求双谱，有例子，可直接运行(bispecd and bispeci)

Fortran算法程序集，徐士良，第二版，包括源码和pdf。(The Fortran algorithm assemblies, XU Shi-liang, second edition, including source code and pdf.)

说明：  本文为JC法程序，用于计算结构的可靠度指标。(JC method for structure reliablibity.)

地球科学：重力场积分(Fortran90) Stokes/Hotine/V_M垂线偏差积分：数值积分、二维平面FFT、二维球面FFT、一维FFT(Earth Sciences: Gravity Field Points (Fortran90) Stokes/Hotine/V_M deflection of the vertical integration: numerical integration, the two-dimensional plane FFT-dimensional sphere FFT, one-dimensional FFT)

说明：  矩阵计算英文版第4版，经典，经典，很不错！！！！！请下载！！！！！！(Matrix Computing English Version 4, classic, classic, very good!!!! Please download!!!!!!)

说明：  LM莱文博格马夸特优化算法，python语言(this is a file of LM algorithm which was wroten by python language)

说明：  利用时域有限差分计算电磁场，采用时域算法计算(Calculation of electromagnetic field by FDTD)

用于ABAQUS计算，描述复合材料温度场变化的程序(describing changes in the temperature field of composite materials with ABAQUS)