Description: 对具有随机噪声的二阶系统的模型辨识，进行标幺化以后系统的参考模型差分方程为： y(k)=a1*y(k-1)+a2*y(k-2)+b*u(k-1)+s(k) 式中，a1=0.3366,a2=0.6634,b=0.68,s(k)为随机噪声。由于神经网络的输出最大为1，所以，被辨识的系统应先标幺化，这里标幺化系数为5。采用正向建模(并联辨识)结构，神经网络选用3-9-9-1型，即输入层i，隐层j包括2级，输出层k的节点个数分别为3、9、9、1个；由于神经网络的最大输出为1，因此在辨识前应对原系统参考模型标么化处理，辨识结束后再乘以标么化系数才是被辨识系统的辨识结果。-of random noise with the second-order system model, per-unit system after the reference model differential equation : y (k) = y* a1 (k-1) a2* y (k-2) b* u (k-1) s (k)- style, = 0.3366 a1, a2 = 0.6634, b = 0.68, s (k) as random noise. Because the neural network for a maximum output, therefore, the identification system should be per-unit, per-unit here coefficient of 5. Forward modeling (Parallel identification) structure, neural network-based selection 3-9-9-1, i input layer, hidden layer, including two j, k output layer to the number of nodes 3,9,9,1; The neural network the biggest losers up to one, in the original deal before Identification System Reference Model S Mody treatment, then multiplied by the end of Identification Standard Mody coefficient was recognition system is the ide Platform: |
Size: 874496 |
Author:孙荣超 |
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Description: 提供了4种解常微分方程组的c++代码：定步长四阶龙格-库塔(Runge-Kutta)法(RK4->RKDUMP)； 自适应变步长的龙格-库塔(Runge-Kutta)法(RKQC->ODEINT)； 改进的中点法(MMID)； 外推法(BSSTEP(RZEXTR(有理函数), PZEXTR(多项式))；-provide four kinds of solutions of ordinary differential equations c code : There will be four bands step Runge- Kutta (Runge- Kutta) Act (RK4- Platform: |
Size: 5120 |
Author:ldg |
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Description: “解边值问题的松弛法”(SOR)(Chebyshev absolution)和“交替方向隐式方法”(ADI)
(此两种解法均针对解椭圆形方程所用到的方法)-"solution to the boundary value problems relaxation method" (SOR) (Chebyshev Absolution) and "alternating direction implicit method" (ADI) (these two solutions are targeted at the Oval equation solution by the method used) Platform: |
Size: 2048 |
Author:ldg |
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Description: 利用Matlab求解带有时间延迟的Mackey-Glass系统，在非线性动力学中经常用到。可以用来求解类似的延迟微分方程系统。-using Matlab time delay with the Mackey-Glass Systems, Nonlinear Dynamics frequently used. Can be used to solve the differential equation similar to the delayed system. Platform: |
Size: 1024 |
Author:贾强 |
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Description: MATLAB有关的电子书，主要涉及微分方程求解、编程指南、GUI、函数汇总-MATLAB the e-books, mainly related to differential equation solving, programming guides, GUI, function matrix, etc. Platform: |
Size: 997376 |
Author:roc woods |
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Description: The objectives of Partial Differential Equation Toolbox™ software are to
provide you with tools that:
• Define a PDE problem, e.g., define 2-D regions, boundary conditions, and
PDE coefficients.
• Numerically solve the PDE problem, e.g., generate unstructured meshes,
discretize the equations, and produce an approximation to the solution.
• Visualize the results.-The objectives of Partial Differential Equation Toolbox™ software are to
provide you with tools that:
• Define a PDE problem, e.g., define 2-D regions, boundary conditions, and
PDE coefficients.
• Numerically solve the PDE problem, e.g., generate unstructured meshes,
discretize the equations, and produce an approximation to the solution.
• Visualize the results. Platform: |
Size: 2468864 |
Author:yanggy |
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Description: 国外有名的时标微分学书籍，时标微分学是1988年才开始兴起的，综合了常微分和差分方程-Overseas famous time-scale differential calculus books, time-scale differential calculus is the rise in 1988, begin the differential and differential equation Platform: |
Size: 423936 |
Author:ace |
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Description: 第15章 常微分方程的初值问题.zip。是从书中光盘里直接拷贝的代码，放在这里，与大家共享，共同交流，希望对大家有帮助。-Chapter 15 of the ordinary differential equation initial value problem Platform: |
Size: 14336 |
Author:空悟 |
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