boxImage--matlab-code

An effective implicit time integration scheme was proposed for the fi nite element solution of nonlinear problems in structural dynamics. Various important attributes were demonstrated. In particular, it was shown that the scheme remains stable, without the use of adjustable parameters, when the commonly used trapezoidal rule results in unstable solutions. In this paper we focus on additional important attributes of the scheme, and specifi cally on showing that the procedure can also be effective in linear analyses. We give, in comparison to other methods, the spectral radius, period elongation, and amplitude decay of the scheme and study the solution of a simple ‘model problem’ with a very fl exible and stiff response.

which gives the DC-DC boost converter explanation

tracking of motion by subtraction in live cam with centroid,

：给出了一种提取特征点的新方法和合理的特征不变量。该方法根据三角不等式原理利用第三边与另 外两边之和的比值大小来确定角点，以特征点和它相邻的两个特征点所形成的两条直线的夹角正切值以及三角形 第三边与另两边和的比值作为特征不变量。这种特征提取的方法简单，并且由于扩大了模板取值范围，使识别效果受特征点漏检的影响较小。实验表明，该方法不仅简便，而且效果良好。(: In this paper, a new feature point extraction method and the characteristics of rational invariants. The method is based on the principle of triangle inequality with the use of the third side and both sides of the ratio of the size to determine the Corner to feature point and its two adjacent feature points formed by the angle between two tangent linear and the third triangle on both sides and edges with another feature of the ratio as a variable. This feature extraction method is simple, and as a result of the expansion of the scope of the template values to identify the effect of feature points by the impact of smaller undetected. Experiments show that the method is not only simple, but effective.)

基于matlab/simulink的直流闭环调速(based on Matlab/Simulink DC closed loop speed control)

说明：  详细介绍 小型风力发电 系统设计 国外参考资料 附录有 详细硬件设计 比较经典(Details small wind power system the design foreign References Appendix hardware design classic)

基于Matlab的GPS卫星信号的采集仿真程序(Matlab GPS satellite signal acquisition-based simulation program)

This program simulates the transmission performance of BPSK under Additive White Gausian Noise (AWGN) environment.

小波变换中的同步挤压小波程序。支持GUI界面交互，也可独立运行，易改造，易结合。(The synchronous extrusion wavelet program in the wavelet transform. Support GUI interface interaction, also can run independently, easy to transform, easy to combine.)

1. 选择一个wav文件作为分析的对象，对该信号进行读取（使用wavread函数）； 2. 音乐信号的频谱分析：首先画出信号的时域波形，然后对信号进行频谱分析得到信号的频谱特性。 3. 设计一组数字滤波器并画出各个滤波器的频率响应 (Filter)