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This simulink model simulates the damped driven pendulum, showing it s chaotic motion. theta = angle of pendulum omega = (d/dt)theta = angular velocity Gamma(t) = gcos(phi) = Force omega_d = (d/dt) phi Gamma(t) = (d/dt)omega + omega/Q + sin(theta) Play with the initial conditions (omega_0, theta_0, phi_0 = omega(t=0), theta(t=0), phi(t=0)) and the system parameters (g, Q, omega_d) and the solver parameters/method. Chaos can be seen for Q=2, omega_d=w/3. The program outputs to Matlab time, theta(time) & omega(time). Plot the phase space via: plot(mod(theta+pi, 2*pi)-pi, omega, . ) Plot the Poincare sections using: t_P = (0:2*pi/omega_d:max(time)) plot(mod(spline(time, theta+pi, t_P), 2*pi)-pi, spline(time, omega, t_P), . ) System is described in: "Fractal basin boundaries and intermittency in the driven damped pendulum" E. G. Gwinn and R. M. Westervelt PRA 33(6):4143 (1986) (This simulink model simulates the damped driven pendulum, showing it s chaotic motion. theta = angle of pendulum omega = (d/dt)theta = angular velocity Gamma(t) = gcos(phi) = Force omega_d = (d/dt) phi Gamma(t) = (d/dt)omega+ omega/Q+ sin(theta) Play with the initial conditions (omega_0, theta_0, phi_0 = omega(t=0), theta(t=0), phi(t=0)) and the system parameters (g, Q, omega_d) and the solver parameters/method. Chaos can be seen for Q=2, omega_d=w/3. The program outputs to Matlab time, theta(time) & omega(time). Plot the phase space via: plot(mod(theta+pi, 2*pi)-pi, omega, . ) Plot the Poincare sections using: t_P = (0:2*pi/omega_d:max(time)) plot(mod(spline(time, theta+pi, t_P), 2*pi)-pi, spline(time, omega, t_P), . ) System is described in: "Fractal basin boundaries and intermittency in the driven damped pendulum" E. G. Gwinn and R. M. Westervelt PRA 33(6):4143 (1986) )

apphying discret wavelet transform 2d on image processing

exploring graph layout

说明：  matlab 图像灰度化代码，小波边缘检测(matlab image gray-oriented code, wavelet edge detection)

matlab实现的阴影消除程序，图像处理的常用程序，供大家参考(Shadow Elimination matlab implementation procedures, common image processing program, for your reference)

mux one hwich is teh best knwo progerma i n the workdl and ist is the

MATLAB在概率统计中的若干命令和使用格式，这些命令存放于MatlabR12ToolboxStats中。(MATLAB in Probability and Statistics in the number of orders and the use of format, the commands stored in MatlabR12ToolboxStats in.)

1.FFT.doc 2.用MATLAB进行FFT频谱分析 3.傅立叶变换与频谱分析.pdf 4.快速Fourier变换算法及Matlab程序实现.pdf 5. 利用MATLAB和窗函数法设计FIR数字滤波器.pdf 6. 用MATLAB辅助设计FIR数字滤波器.pdf(1.FFT.doc 2 MATLAB FFT spectrum analysis 3 FFT and spectrum analysis . Pdf 4 fast Fourier transform algorithm and Realization of Matlab program . Pdf 5 MATLAB and window function method using FIR digital filter design . Pdf 6 MATLAB aided design FIR digital filter . Pdf)

里面包含了曲线演化的两种形式，常量演化和曲率演化。(Which contains the curve evolution of two forms, the constant evolution and the evolution of curvature.)

介绍了在提取穿越次数特征、粗网格特征以及密度特征提取的基础上应用SVM进行手写体阿拉伯数字识别的方法。(Introduced the extraction across a number of features, coarse grid and density feature extraction on the basis of the application of SVM method for handwritten digits recognition.)