newfft

reading universal file format

人工蜂群算法的源程序，优化效果好，运行时间短。(Artificial colony algorithm source code, optimize the effect is good, operation time is short. )

针对风电场短期风速的预测提出一种基于小波变换的组合预测方法。首先利用Mallat 算法对短期风速时间序列进行db3 小波三层分解与重构，得到短期风速时间序列的近似分量和细节分量。针对近似分量和细节分量的不同特性，对近似分量利用粒子群算法优化的最小二乘支持向量机进行预测，对细节分量利用自回归求和滑动平均模型进行预测。最后各预测模型预测值组合叠加得到最终的短期风速预测值。仿真结果表明该方法具有较高的预测准确度。(In order to improve short-term wind speed prediction accuracy of wind farms，a combined prediction method based on the wavelet transform is proposed. Firstly，the db3 wavelet is used for three-layer decomposition and reconstruction for short-term wind speed time series through Mallat algorithm. The approximation components and the detail components of the short-term wind speed are then obtained. Next，according to the different characteristics of these components，the least square support vector machine optimized by particle swarm algorithm and the autoregressive integrated moving average model are adopted as the predictivemodels for the approximate components and the detail components respectively. Then，the final predictive value of the short-term wind speed is obtained by the combination of the two components. The simulation results indicate that higher accuracy can be obtained in this prediction method.)

用PTS降低PAPA的仿真源代码,试过了不错,是转发的(PTS reduce the simulation with the source code PAPA)

主要用于对MATLAB的仿真上，进行FFT函数快速分析，已得到频谱波形和谐波波形的显示，进一步分析原理。(Mainly used MATLAB simulation, rapid analysis of the FFT function, has been harmonious spectrum waveform waveform display, further analysis of the principle.)

discuss the cooling of a circular fin by means of convective heat transfer along its length. Convection gives rise to a temperature-dependent heat loss or sink term in the governing equation. Shown in Figure 4.9 is a cylindrical fin with uniform crosssectional area A. The base is at a temperature of 100°C (TB) and the end is insulated. The fin is exposed to an ambient temperature of 20°C

Automatic Detection and Elimination of an Optic Disc for Improving Drusen Detection Accuracy.Age Related Macular Degeneration (ARMD) is the most common cause of blindness

Finite element by Matlab

Matlab code for magnetic field calculus generted froma square magnetic coil

三相SVPWM整流控制控制，在MATLAB/simulink下搭建的模型并进行了仿真，效果很理想，适合广泛使用(Phase SVPWM rectifier control control, build the model in MATLAB/simulink simulation, the effect is very ideal for widespread use)