电工技术实验装置常见故障维修

新型电工技术实验装置以及其他相关部件常见故障的诊断与维修,通过对维修经验的总结,归纳了查找相关故障的一般步骤,总结了各种常见故障的处理方法。从维护实验设备的角度出发,对学生日常实验所需注意之处进行了小结,以期尽量避免实验设备故障发生,从而提高实验设备的完好率。所归纳的实验设备故障诊断与检修办法对于各大专院校使用的新型电工技术实验装置的故障维修和日常维护具有较强的现实意义和较高的参考价值。     

浅谈加强实验中心的质量管理

从多方面分析了当前高校实验设备故障产生的原因,并就如何减少实验设备故障的产生,提高实验设备投资效益谈了自己的看法.     

提升设备工况监测与故障诊断网络实验教学平台

构建了基于互联网的提升设备工况监测与故障诊断网络实验教学平台。根据终端的不同,该网络平台分为互联网实验教学子平台和移动互联网实验教学子平台。两个子平台均包含设备监测、设备诊断和设备选型等功能模块。设备监测和设备诊断模块面向提升设备的5个子系统,实现实时值查看、数据查询、故障报警和原因分析等功能。在教学中,将现场实验和网络实验相结合,大大提高了实验教学效果。     

故障Petri网方法在惯性导航系统温控回路故障诊断中的应用

基于故障Petri网方法对惯性导航系统温控回路故障进行建模,并结合关联矩阵和状态方程对故障进行诊断推理,查找故障原因。实验证明,故障Petri网方法可以实时快速地对故障进行诊断,方法实用有效。     

数字语言实验室常见故障及排除方法

语言实验室是高校外语教学的重要设施,通过分析数字化语言实验室设备常见故障的原因,归纳出不同故障的现象和排除方法.注重日常维护经验的总结和积累,就可以减少因设备问题对教学活动的影响,确保设备的正常运行.     

基于小波变换诊断轴承外圈故障

针对设备的关键部件轴承易发生故障的特点,利用轴承试验台采集外圈点蚀的故障信号,使用小波分析法对故障信号进行早期诊断,通过实验及诊断过程证明小波与Hilbert包络谱结合进行故障信号分析的方法对于轴承故障具有明显的效果,有助于更好的进行故障诊断工作。     

基于B/S及LabVIEW的振动测试网络实验教学系统

正据统计,在机械行业中有80%的设备损坏与振动有关。振动信号是设备故障特征的载体,若其发生故障,则振动信号的能量分布将发生变化。通过检测设备振动信号,并提取其特征,可以对设备的运行品质及故障状态进行诊断[1~3]。振动测试是大学工科实验中必不可少的实验环节,但由于振动实验台、振动传感器、信号调理器、数据采集卡价格较贵,在实验教学中很难一人一套,因此振动测试实验在大多数高校都没有普及。以网络作为实     

常用电子测量仪器引发实验异常现象分析

电子技术实验故障产生的原因是多方面的,由电子测量仪器引发的异常现象是实验故障问题的一个方面.本文根据教学实践,着重分析了实验中因电子仪器设备方面的不合理使用而出现异常现象的原因,探讨问题所在及解决的办法,以期提高仪器的使用水平与方法,提高实验效率与效果.     

加强实验室仪器设备维护的探讨

分析了当前学校实验设备产生故障的原因,并就如何加强实验室仪器设备的维护,提高设备的完好率、利用率,提出了自己的看法。     

机械故障仿真试验台实验与应用

齿轮箱系统应用非常广泛,如发生故障将会影响机械的安全运行,也将严重威胁操作人员的安全,因此对齿轮的故障诊断很有必要.对"转子动力学"及"机械的奥秘"课程开设了以旋转设备故障诊断实验内容,利用故障仿真器中各种故障程度齿轮及轴承在不同转速下的数据采集和分析,得到了相关的实验规律.该诊断在验证设备可靠性的同时,为课程的实验教...     

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.     

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…     

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.