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ForcedPendulum
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)
)
- 2010-02-17 07:28:51下载
- 积分：1
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Desktop
利用matlab的gui设计的带有输入和输出功能的界面图形，可视性很强，自己独立编写，学习非常值得(Uses the Matlab GUI design to have the input and output function the interface graph, the visibility is very strong, writes independently, the study is very worthwhile.)
- 2020-06-19 19:00:01下载
- 积分：1
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081105
说明： 基于MATLAB的组合模型
在港口吞吐量预测中的应用
以某港1998--2007年集装箱吞吐量为实测数据，建立其集装箱吞吐量的灰色理论、三次指数平滑、三次多项式
等预测模型，在MATLAB下，对比该港集装箱吞吐量各模型预测拟合值与实际值的差异。分析了差异产生的原因及其单一预
测模型的局限性，提出了港口集装箱吞吐量组合预测法。其预测误差明显低于其它单模型。运用组合预测模型．可以降低误
差。提高预测精度。(A combination of MATLAB-based model in port throughput prediction of a Hong Kong 1998- 2007 container throughput for the measured data, the establishment of its container throughput of the gray theory, the three exponential smoothing, prediction models, such as cubic polynomial in MATLAB, the contrast of the Hong Kong container throughput of fitting the models to predict the value of the difference between the actual value. Analysis of the causes of differences and the limitations of a single prediction model, the combination of port container throughput prediction. Its prediction error was significantly lower than other single model. The use of combination forecasting model. Can reduce the error. Improve the prediction accuracy.)
- 2009-08-09 13:04:22下载
- 积分：1
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Crop
matlab code for cripppong an image
- 2010-05-15 17:51:44下载
- 积分：1
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musictest
信号处理作业，高斯白噪声，信噪比对music法分辨力的影响(Signal processing and Gaussian white noise, signal to noise ratio on the resolution of the music France)
- 2012-06-05 17:02:25下载
- 积分：1
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F16FlightControlSimulation
F16飞行控制仿真程序,针对F16战斗机做的飞行控制仿真(F16 flight control simulation program, to do for the F16 fighter flight control simulation)
- 2011-10-17 10:09:00下载
- 积分：1
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S变换
说明： 用S变换对电压暂降进行检测，得到基频幅值，相位跳变，突变点，谐波检测，频率幅值包络线等特征量(The S-transform is used to detect the voltage sag, and the characteristic parameters such as fundamental frequency amplitude, phase jump, mutation point, harmonic detection, frequency amplitude envelope are obtained)
- 2021-03-29 15:29:10下载
- 积分：1
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renlianshi
用于人脸识别matlab程序 有图片可以测试(Procedure for face recognition matlab image can test)
- 2010-06-11 07:55:00下载
- 积分：1
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Dock_Sever_Simulation
用matlab自己写的码头油轮装卸载仿真程序。(err)
- 2007-12-28 17:39:06下载
- 积分：1
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simulink
利用SIMULINK 来实现16QAM的仿真，并分析QAM的系统性能。(16QAM using SIMULINK to realize the simulation, and analysis of system performance QAM.)
- 2009-05-09 21:25:02下载
- 积分：1
