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zhaomingdagonglvfaguanerjiguan

于 2012-10-25 发布文件大小:335KB

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根据传热理论, 建立了大功率发光二极管的有限元模型. 选择了4 种键合材料( 高导热导电银胶、纳米银焊膏, 大功率芯片键合胶、Sn70Pb30) , 4 种基板材料( Al2O3、A lN、A-l SiC、铜钼合金) . 采用ANSYS 有限元热分析软件进行了温度场仿真, 得到了大功率发光二极管封装材料的最优选择. 研究了基板厚度、芯片输出功率及外接热沉时对发光二极管结温的影响.(Heat transfer theory, the finite element model of the high-power light-emitting diode. Choose four kinds of bonding material (high thermal conductive silver glue, nano-silver paste, high-power chip bonding glue Sn70Pb30) substrate material ( Al2O3, A lN, Al SiC, copper molybdenum alloy). temperature field simulation using ANSYS finite element thermal analysis software, the optimal choice of high-power light-emitting diode packaging materials. substrate thickness, chip output power and external heat Shen light-emitting diode junction temperature.)

文件列表：

2011照明用大功率发光二极管封装材料的优化设计.pdf,370574,2012-10-25

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AUSM
完成前台阶问题的计算，利用的AUSMPW格式，算法结构较为简单，所以文字说明较少(Completed on the front steps of the calculation, use of AUSMPW format, the algorithm structure is relatively simple, so less text)

2012-07-05 19:33:41下载

积分：1
PSO
针对传统的算法如遗传算法、粒子群算法等在TSP问题上求解精确性和求解规模上都还有一定的不足，本文提出了一种基于动态规划思想的粒子群优化算法。该算法用动态规划的方法实现粒子间的信息交互和粒子的进化，并且将粒子群中的粒子按无标度信息指导网络拓扑图的方式进行连接。仿真结果表明该方法能有效地减小误差率，提高解的精确，同时还保持了较低的计算复杂度，具有良好的稳健性。(TSP problem solving for the traditional algorithms such as genetic algorithms, particle swarm optimization accuracy and solving the scale, there is a certain lack of a dynamic programming algorithm-based particle swarm optimization algorithm. The algorithm using dynamic programming method to achieve the evolution of information exchange between the particles and the particles, and particle swarm particle scale-free information guide network topology map to connect. The simulation results show that this method can effectively reduce the error rate and improve the solution precision, while maintaining a low computational complexity, good soundness.)

2013-01-07 18:05:35下载

积分：1
FDTD3D_PEC
使用matlab编写的时域有限差分法，pec边界的光子晶体。(Written using matlab finite difference time domain method, pec boundary of the photonic crystal.)

2011-10-27 14:11:40下载

积分：1
fft
信号提取，fft变换，模态分析，互相关分析(fft)

2020-06-29 10:00:02下载

积分：1
通过模型决定系数完成支持向量机参数优化 SVR_fitting
说明：通过模型决定系数完成支持向量机参数优化，并建立基于大数据的支持向量机模型实现回归拟合(The parameters of SVM are optimized by the coefficient determined by the model, and the regression fitting is realized by the support vector machine model based on big data)

2020-06-16 00:14:36下载

积分：1
well_fft
实现了测井数据的fft变化分析，可以用于查看测井数据的频谱特征(Realize the logging of data changes fft analysis, can be used to view the logging data of spectrum characteristics of)

2008-04-19 13:04:10下载

积分：1
ICP_14900012
ICP迭代最近点算法的各种实现方法，包括四元函数法，最小迭代，等算法，以及ICP迭代最近点算法的实现。(ICP iterative closest point algorithm implementation, including the four-function method, the minimum iteration algorithm, and ICP iterative closest point algorithm.)

2012-08-15 05:54:04下载

积分：1
fdtd3D_PML
计算光子晶体的源程序，基于fdtd 算法，很有帮助(photonic crystal calculation of the source, based on fdtd algorithm, helpful)

2007-04-20 15:36:13下载

积分：1
haar-fft
本程序求相关性K值大小，采用傅里叶矩阵和haar矩阵内积。(The procedures for seeking the size of the K value of the correlation, the use of the Fourier matrix and haar matrix of inner product.)

2012-06-19 11:24:56下载

积分：1
regrRR
Ridge Regression RR 岭回归估计，是非常有用的非线性时间序列算法，在局部多项式预测中非常有用。(Ridge Regression RR ridge regression estimates, it is useful to nonlinear time series algorithms, in Local Polynomial prediction in very useful.)

2008-07-24 15:50:34下载

积分：1

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