基于LabVIEW的电机实验自助平台设计

在自助实验平台构架上,设计了电机实验监测平台,实验者能够自行完成登录、电机实验、处理实验数据并自动生成实验报告等操作。电机实验平台基于Lab VIEW实现,能够方便地完成电机拖动基础性实验。介绍了自助实验平台的结构、电机实验平台的主要功能模块,并进行了直流电动机工作特性测试实验,得到了相应的实验数据和曲线。电机实验平台是在自助实验平台的基础上设计并实现的,是自助实验平台的一部分,通过进一步修改和完善,设计不同的接口模块,还可以将自助实验平台应用到其他实验项目中,实现平台在软、硬件上的多种功能扩展。     

LabVIEW阵列语音处理系统实验平台设计

介绍了基于LabVIEW麦克风阵列语音处理系统实验平台的设计。该平台LabVIEW的前面板采用模块化设计,包括语音采集模块、语音分析模块和语音增强模块三部分。采集模块利用PXI设备对语音源信号进行阵列同步实时采集;分析模块对采集到的语音信号进行语音特征分析,前面板还设置帧长和帧间重叠数等参数调节模块;增强模块采用阵列波束形成算法对采集模块采集到的语音信号进行增强处理。该模块采用LabVIEW与Matlab相结合,即利用LabVIEW前面板调用阵列波束形成Matlab程序包来完成,阵列波束形成算法也可以自行修改。计算机仿真实验结果验证了该实验平台的有效性。     

基于LabVIEW的混沌保密通信实验平台设计与实现

为了将混沌保密通信理论应用于网络实验教学,设计了基于LabVIEW的混沌保密通信实验平台。该平台包括语音信号采集、混沌密钥产生、混沌加解密和系统登录模块。由于混沌信号具有复杂性、不可预测性,所以利用其对语音信号进行加密/解密从而实现语音保密通信。将基于LabVIEW的实验平台进行网络发布,生成可执行文件,使得在没有安装LabVIEW软件的电脑能够运行此实验平台。与传统实验设备相比,该虚拟实验平台无论在经济上,还是在开放与共享方面均具有明显优势。     

光伏发电系统实验平台电能质量监测系统设计

针对光伏发电系统教学研究实验平台普遍缺乏电能质量监测系统这一问题,提出了基于LabVIEW的光伏发电实验平台电能质量监测系统设计方案。该方案通过NI cDAQ-9174数据采集卡对实验平台中经过逆变的交流电进行采集,利用基于LabVIEW的电能质量分析监测模块对采集到的电能数据进行处理及判断,可有效避免由于实验平台逆变模块发生故障,而实验人员在未知的情况下接入负载单元导致其发生损坏的情况。运行测试表明,系统可靠性高、运行稳定,各项功能均达到了设计要求,有效提高了实验平台中负载单元的使用寿命。     

基于LabVIEW的电子实验仿真平台设计

针对传统实验设备投入大、更新速度慢等缺点,在分析高职电子实验课程设置的基础上,利用LabVIEW软件开发设计电子实验仿真平台,整个实验平台分为模拟电子和数字电子两个部分。通过分析介绍运算放大器实验模块和译码器实验模块的仿真设计过程,并通过实验获得的可靠结果,验证了基于LabVIEW的电子实验仿真平台的可行性和准确性。仿真实验平台脱离了传统实验硬件的束缚,可在多媒体教室进行演示,有助于提升学生的学习兴趣,具有一定的实用性。     

基于LabVIEW的传感器虚拟综合实验系统设计

通过整合NI ELVIS和CSY系列传感器实验平台,使用LabVIEW图形化编程语言构建了基于LabVIEW的传感器虚拟综合实验系统。该实验系统可对压力、转速、位移、温度等参数的传感器电路获得的数据进行分析和处理。用户可以在前面板选择不同的实验,了解实验目的和实验原理,完成实验后直接生成实验报告。用户也可根据自己的需求进行实验功能拓展。     

基于LabVIEW和单片机的自动控制系统综合实验

设计了自动控制系统综合实验案例"基于LabVIEW和单片机的温度控制系统设计"。实验系统硬件部分由单片机、温度传感器、D/A转换模块、调压模块和电烤箱组成,设计了单片机与各个模块之间的接口电路。软件部分采用LabVIEW软件实现控制算法,并设计监控界面实现参数设定、温度数据实时监控等功能。设计了单片机与LabVIEW软件之间的串口通信程序,实现了输入、输出数据的传输。通过综合实验系统设计,使学生得到控制系统设计和实验调试等综合能力的训练。     

基于Matlab图像采集工具箱的图像处理实验平台设计

基于Matlab的图像采集工具箱,设计了一套集图像采集与处理的图像数据处理软硬件平台。该平台利用Matlab的图像处理与采集函数,实时从图像传感器采集并处理图像数据。较传统的图像处理平台,该实验平台能提供更多的实验项目和实际体验,提高学生的临场实验效果,并使学生专注于图像处理实验项目的创新思路与算法设计过程。     

基于虚拟仪器的通信原理远程实验平台设计

介绍一种基于虚拟仪器的通信原理课程远程实验平台。为了给学生提供通信原理课程开放性远程实验教学环境,充分利用实验室的设备资源,利用PCI-6251数据采集卡及基于LabVIEW的Web服务器实现了该实验平台。该平台基于客户机/服务器/虚拟仪器的架构构建,学生可通过校园网远程登录实验平台,对真实的实验设备进行远程操作,包括产生各种测试信号,将信号路由到指定实验模块、远程采集和分析实验数据等。位于实验设备和虚拟实验服务器之间的数字电位器模块还允许学生远程调节实验电路的工作参数。应用表明,该平台具有良好的真实性、开放性和可扩展性,能够满足学生进行远程实验的要求。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…