fit

说明：  用二分法和割线法求非线性方程在一区间的解，使误差不超过10E-4(With the dichotomy and the secant method for solving nonlinear equations in a range of solutions, so that error is less than 10E-4)

频率同步算法的时域方法。利用两个连续重复的符号计算频率误差估算。(Frequency synchronization algorithm for time-domain method. The use of two consecutive duplication of symbolic computation to estimate frequency error.)

说明：  我的毕设源码，希望对大家有所帮助，基于Matlab环境实现(the design program for graduation)

multipe sequence alignment in matlab

这个程序是MATLAB的程序，它能够实现中心频率是4000Hz的带通滤波器的功能，在4000Hz的信号上面加了噪声信号，通过滤波器滤除杂波(This program is MATLAB program that enables the center frequency is 4000Hz band-pass filter function in the 4000Hz signal above the noise signal added, filtered through the clutter filter)

Mysmo.mdl 永磁同步电机的主程序，可以实现有速度传感器启动运行，和无速度传感器运行。 SMOmodel.m 改进的滑模观测器模型，实现永磁同步电机反电动势的估算。 PFCDCM0hm5 用的是0.5hm的电感，实现220V交流电变换成400V的直流电，电流断续。 由于是仿真，如果要硬件实现的话，除了需要电压采样外，还需要一个输入电压过零检测 PFCCM320percent98k50 用的是5hm的电感，实现220V交流电变换成320V的直流电，电流连续。功率因数可以达到0.98，用的开关频率为50K PFCCM400percent97k50.mdl 用的是5hm的电感，实现220V交流电变换成400V的直流电，电流连续。功率因数可以达到0.97，用的开关频率为50K (Permanent magnet synchronous motor Mysmo.mdl main program, you can achieve the speed sensor up and running, and speed sensors run. SMOmodel.m improved sliding mode observer model permanent magnet synchronous motor back-EMF estimates. PFCDCM0hm5 with is 0.5hm inductor to achieve 220V AC transform into a 400V DC current is interrupted. As the simulation, hardware implementation, then, in addition to the voltage sampling an input voltage over zero detection PFCCM320percent98k50 the is 5hm inductance to achieve transformation 220V AC 320V DC continuous current. The power factor can reach 0.98, the switching frequency for 50K PFCCM400percent97k50.mdl with is 5hm inductance 220V AC transform 400V DC continuous current. The power factor can reach 0.97, with the switching frequency is 50K)

The future 980 version of LS-DYNA will include Computational Fluid Dynamics (CFD) solvers. The main objective of these new solvers will be to perform fluid structure interactions by directly solving the Navier-Stokes equations and by using any LS-DYNA Lagrangian model for the solid part.

本文为MATLAB一篇详细的教程，看完之后入门应该会容易的多(This article gives a detailed tutorial MATLAB, after reading the entry should be much easier)

This function requires the input of a 2D matrix containing intensity values (double) corresponding to the x-ray scattering image (‘imagemat’). It returns I(q) vs. q in matrix ‘IvsQ’. It loads the experimental parameters saved in A.1. Start and end pixel counts can be adjusted as needed. It is important to resize matrices ‘allpixels’ and ‘sortedpix’ accordingly.

基于中值滤波器的红外弱小目标检测，以9*9为滤波窗口大小(Median filter-based infrared small target detection, to 9* 9 for the filtering window size)