一种基于MATLAB的信号采集和分解方法

提出了一种MATLAB环境下利用数据采集工具箱、信号处理工具箱和小波工具箱采集和分析信号的方法,给出了数据采集、信号分解过程和MATLAB程序,并对实验结果进行了分析.     

MATLAB优化工具箱在结构优化设计中的应用

MATLAB优化工具箱具有强大的科学计算能力,在工程设计领域得到了广泛的应用.简要介绍了MATLAB优化工具箱,通过对MATtAB优化工具箱中fmincon函数的语法进行分析,提出了结构优化设计的通用求解方法.首先,合理设置优化目标函数和约束条件.然后,使用MATLAB优化工具箱进行编程计算.结果显示,与其他方法相比,使用MATLAB优化工具箱进行优化,不仅可以提高计算精度,而且可以减少计算时间.因此,在结构工程设计领域有较强的实际应用价值.     

MATLAB符号工具箱的开发及其应用

对MATLAB符号工具箱的基本功能及其在高等数学中的应用进行了研究，指出了工具箱某些函数存在的问题，并给出了解决问题的途径，使得该工具箱的功能更完备，应用范围更广泛，使用更加方便。     

MATLAB在电液伺服模糊控制系统仿真中的应用

以MATLAB6.1为基础, 简要介绍了模糊控制工具箱的基本函数及simulink工具箱的功能,同时结合电液伺服模糊控制系统实例,详细阐述了利用simulink交互式仿真模块库建立系统框图、利用fuzzy工具箱创建模糊推理关系、设置隶属度函数、建立模糊控制规则,实现对模糊控制器设计的具体步骤及借助MATLAB对控制系统进行仿真研究的方法.     

图像处理技术的Matlab实现

本文介绍了MATLAB语言的特点以及图像处理工具箱实现的经典图像处理技术。应用该工具箱对一瓷碗图像进行经典图像处理,通过实例验证了该语言具有强大的图像处理能力。     

Construction of AFLP-based genetic linkage maps for the Chinese shrimp Fenneropaeneus chinensis

Fenneropaeneus chinensis is an important species in marine fishery resources and aquaculture in China. A genetic linkage map is essential for improving the efficiency of its breeding by marker-assisted selection and identifying commercially important genes. Linkage maps of F. chinensis were constructed with an F2 mapping population （110 progenies） using amplified fragment length polymorphic （AFLP） marker in this study. Fifty-five AFLP primer combinations produced 532 AFLP markers fitting for map strategy in mapping family. The markers with 3：1 segregating ratios were analyzed using F2 intercross model for the common linkage map, while the markers with 1：1 ratio were analyzed using the pseudo-testcross strategy. The maps of male, female and common were constructed. The female map included 103 markers that formed 28 linkage groups, covering a total length of 1090 cM. All markers were linked with the linkage groups. Segregation distortion was observed for 6 of 103 markers in the female map. The average distance between markers was 14.53 cM and ranged from 4.4 to 24.8 cM. The male map included 144 markers that formed 35 linkage groups. Ten markers remained unlinked in male map. Segregation distortion was observed for 7 of 144 markers in the male map. The total distance of male map covered 1617 cM. The average distance between markers was 16.36 cM. The male map was 32.6% longer than the female map, which may reflect sex-specific recombination rates in Chinese shrimp. The common map was composed of 216 markers, including in 44 linkage groups covering a total distance of 1772.1 cM. Two markers remained unlinked. No distorted markers of 216 markers were shown in the common map. The distance between markers was 10.42 cM. An average estimated genome size for the Chinese shrimp was 2420 cM, which was consistent with the relative size of the Penaeid genome. The distribution of AFLP markers was relatively even in chromosomes of Chinese shrimp maps. The linkage analysis presented in this work provided some insight     

MATLAB语言的神经网络工具箱及应用

本文首先介绍了MATLAB神经网络工具箱,并结合实例对神经网络工具箱中的一些函数及神经网络结构进行解释和说明;然后对神经网络在同步中的应用进行介绍并通过仿真验证了神经网络在同步中应用的可行性。     

MATLAB曲线拟合工具箱在风机实验数据处理上的应用

介绍了MATLAB曲线拟合工具箱,并通过对风机特性测试数据的处理,给出了具体的应用方法;该工具箱不仅适用于实验数据的拟合处理,还适用于将表格数据转化为函数表达式.     

小波图像融合评价方法的综合比较研究

图像融合的客观评价方法是图像融合领域研究的热点问题之一。论文总结了目前参考文献中常见的图像融合评价方法,利用MATLAB实现了这些方法并将它们集成为一个图像融合评价的可视化工具箱。该工具箱可直观地选择融合图像并给出各种评价结果。我们使用该工具箱,对基于小波的图像融合进行了较为系统的评价分析,并给出了各种评价方法的对比分析结论。     

Construction of AFLP-based genetic linkage maps for the Chinese shrimp Fenneropaeneus chinensis

Fenneropaeneus chinensis is an important species in marine fishery resources and aquaculture in China. A genetic linkage map is essential for improving the efficiency of its breeding by marker-as- sisted selection and identifying commercially important genes. Linkage maps of F. chinensis were constructed with an F2 mapping population (110 progenies) using amplified fragment length polymor- phic (AFLP) marker in this study. Fifty-five AFLP primer combinations produced 532 AFLP markers fitting for map strategy in mapping family. The markers with 3:1 segregating ratios were analyzed using F2 intercross model for the common linkage map, while the markers with 1:1 ratio were analyzed using the pseudo-testcross strategy. The maps of male, female and common were constructed. The female map included 103 markers that formed 28 linkage groups, covering a total length of 1090 cM. All mark- ers were linked with the linkage groups. Segregation distortion was observed for 6 of 103 markers in the female map. The average distance between markers was 14.53 cM and ranged from 4.4 to 24.8 cM. The male map included 144 markers that formed 35 linkage groups. Ten markers remained unlinked in male map. Segregation distortion was observed for 7 of 144 markers in the male map. The total dis- tance of male map covered 1617 cM. The average distance between markers was 16.36 cM. The male map was 32.6% longer than the female map, which may reflect sex-specific recombination rates in Chinese shrimp. The common map was composed of 216 markers, including in 44 linkage groups covering a total distance of 1772.1 cM. Two markers remained unlinked. No distorted markers of 216 markers were shown in the common map. The distance between markers was 10.42 cM. An average estimated genome size for the Chinese shrimp was 2420 cM, which was consistent with the relative size of the Penaeid genome. The distribution of AFLP markers was relatively even in chromosomes of Chi- nese shrimp maps. The linkage analysis presented in this work provided some insight into the level of polymorphism and genetic variation of Chinese shrimp.     

基于人工神经网络的陕西省城市职能分类探析

基于人工神经网络(ANN)中自组织特征映射网络(SOM)的聚类功能,采用统计年鉴中城市非农行业就业人口的资料,运用MATLAB2010软件的神经网络工具箱,对陕西省10个地级市城市综合职能进行分类,最终将10个地级市分为5类,并对分类结果进行分析和讨论.结果表明,人工神经网络方法实际可行.     

基于CCA和SOFM的轴承故障特征提取

提出曲元分析(CCA)和自组织特征映射(SOFM)相结合的方法用于轴承的故障诊断特征提取.首先通过传感器测得轴承在正常和非正常状态下的信号;然后对所得数据进行归一化;考虑到数据比较庞大,利用CCA进行降维;再利用SOFM进行训练,网络对不同状态下的输入具有明显不同的输出.利用Matlab神经网络工具箱来实现上述算法.实例仿真表明,这个算法可以快速正确地提取出轴承故障特征值,并通过聚类算法完成轴承的故障诊断.     

基于ArcGIS的流域水文特征分析

水文模型始终是水文科学研究的重要手段与方法之一。数字高程模型(DEM)是构成GIS的基础数据,利用DEM可以提取流域的许多重要水文特征参数。通过对DEM流域水文特征信息提取的基本原理与实现手段的研究,应用地理信息系统软件ArcGIS 9.3所提供的水文分析工具箱实现了流域水文特征信息的提取。通过提取结果与原始区域影像图的对比,证实通过DEM数据提取的流域水文特征信息与实际河流水系特征基本吻合。因此,应用DEM提取流域水文特征信息的方法是可行且有效的。     

CC专家库的研究与设计

CC工具箱系统是遵循CC标准而设计的一套对信息技术产品和系统的安全功能及相应保证措施进行自动化评估的软件系统．该系统主要包括CC工具箱和CC专库（CCEB)两个模块．提出了CC专家库(CCEB)的规划设计思路，并将此设计规划方案进行了实现，以及将CCEB导入CC工具箱，以完成对CC工具箱系统的支持．实践证明，CCEB方案是有效和实用的。     

真彩图像去噪方法的研究与实现

在研究真彩图像的去噪问题的基础上,采用MATLAB的图像处理工具箱和小波工具箱分别实现了对真彩图像的去噪,并且给出了MATLAB源程序和仿真效果图,结果证明使用小波分析方法对真彩图像的去噪方法效果比较好,在要求实时传输时小波分析对压缩图像数据具有一定的应用价值．     

散列技术在CC工具箱开发中的应用实现

研究了散列技术的一些技术性方法，对CC标准作了简介．利用对散列技术研究的成果，具体实现了CC工具箱的开发，其中包括生成预定义环境文件，存放CC组件，存放CC组件依赖关系，创建数据索引等．这使CC工具箱可以对CC标准所定义的数据进行高效的使用，从而使CC工具箱软件建立在一个高效的基础之上．     

基于MATLAB的烘干车间模糊控制器设计与实现

介绍了在食品加工中对烘干过程进行控制中所遇到的难点问题，利用模糊控制技术对烘干车间温湿度控制进行了研究，并且基于MATLAB6．X(SIMULINK)语言给出了该模糊控制器的具体设计和软件实现。     

基于MATLAB平台的遗传算法工具包

在分析遗传算法要素的基础上,编写了基于Matlab的遗传算法工具包（GAToolbox）,该工具具有运行稳定,结构灵活,扩展方便的特点,并易与Matlab的其他工具包结合使用,给出了Matlab遗传算法工具包的三个成功应用实例;1）采用遗传算法工具包构造递阶遗传算法,2）基于遗传算法的径向基径神经网络学习算法;3)遗传算法优化化工过程操作条件,说明Matlab遗传算法工具包的稳定性和实用性。     

基于Simulink的汽车电控单元标定工具箱设计与实现

根据现代汽车电子系统V模式开发流程的需要,针对底层标定系统在不同硬件平台与不同电控单元开发过程中存在的扩展性与移植性差,效率较低等缺点,提出了基于Simulink的汽车电控单元标定工具箱的设计思路。依据功能分类构造底层标定系统的层次体系结构,结合Simulink的可视化环境,采用C MEX S函数构建标定工具箱。实际应用结果表明,所构建的工具箱能够快速有效地实现对汽车电控单元控制参数的在线标定及信号的实时测量。