RH实训教学系统的设计与研制

针对高校实践要求,在实验室设计了符合生产实际的RH冷态实训装置。控制系统采用一体化控制柜。选用西门子S7-300PLC和紫金桥组态软件实现实训装置控制系统的设计。控制模式包括远程自动控制、远程手动控制和就地手动控制三种模式。通过研制与开发RH仿真实训模型,可实现教学内容形象化、时空化。该教学系统适用于课程教学实验、专业综合实验、创新研究以及毕业设计各个教学环节。     

立体仓库实训教学设备的设计

针对高校实践教学要求并结合自动化类专业的特点,开发设计了一种模拟生产实际的自动化立体仓库实训装置。详细地介绍了装置的总体结构、硬件设计、下位机程序设计和上位机监控组态设计。本装置采用西门子S7-300PLC作为控制系统,并用WinCC组态软件开发了监控系统,实现了自动化立体仓库实训装置的就地手动控制、远程手动控制和远程自动控制等操作模式。在实际学生实训中,该装置实现了自动化生产实践教学内容的形象化,拉近了课堂与生产实践的距离,为培养学生实践动手能力、分析解决问题的能力提供了一个很好的实践平台。     

连铸实训教学系统的设计与开发

针对教育部提出高校要强化实践教学要求,我们设计与研制了连铸模拟冷态实训装置,用于钢铁冶金专业的实践教学。控制模式包括远程自动控制、远程手动控制和就地手动控制三种模式。连铸模拟冷态实训装置的开发,可实现教学内容形象化、时空化,拉近课堂与实践的距离。该装置已经投入使用,系统运行稳定,获得了较好的实训效果。     

铁水预处理实训教学系统的设计与研制

针对高校实训教学要求,设计了符合生产实际的铁水预处理喷粉脱硫冷态实验装置。控制系统采用一体化控制柜。选用PLC和紫金桥组态软件实现实训装置控制系统的设计。开发了铁水预处理喷粉脱硫动力学模型。根据初始条件计算需要吹入铁水的镁粉重量、喷粉速度等,由PLC对确定好的过程参数进行控制。通过研制与开发铁水预处理实训模型,实现教学内容形象化、时空化,拉近课堂与实践的距离。     

基于CompactLogix平台的转炉氧枪冷却水智能控制系统设计

通过对转炉氧枪冷却水控制系统的工艺流程和功能分析,设计了使用CompactLogix作为主控制器的三层网络控制系统。利用EtherNet和远程IO,有效解决了远程通信。给出了设备选型和整体方案。     

高校PLC实训资源实时远程可视、可控共享平台的设计与实现

PLC可编程控制技术相关专业课程是自动化、机电一体化等专业的核心课程,该课程的实训环节在整个课程中所占比例较大,实训设备与实训环境造价很高,各高校的PLC技术实验室的容量、设备数一般都比较有限,无法全面满足学生的实训需求。本文设计、实现了一种基于WINCC组态软件开发、PLC远程下载、视频画面远程网络共享、专用控制界面远程访问等技术,能够在信息化环境下,使PLC实训设备实现在线远程实时共享的解决方案。该平台可以通过网络在实训室外的PC极上对实训室内的PLC设备进行程序上载、下载,控制PLC设备的输入、输出、中间继电器状态以及数据存储器的数值,并且通过实时画面监视PLC实际控制系统的运行状态,实现PLC实训资源的使用效率最大化。同时也为需要实现远程多终端控制操作的工业控制情境提供了有价值的系统模型。     

基于GE Rx3i PLC生产过程控制技术实训装置设计与实现

针对自动化专业的学生,结合高校实训要求,制作了符合工业生产实际的过程控制实训装置,系统主要有控制柜和控制对象(过程控制实训装置)两大部分组成。选用美国通用电气的GE Rx3i PLC和IFIX组态软件实现了过程控制实训装置控制系统的设计,实现了温度、流量、液位、压力4个基本模拟量的实训和触摸屏可选择性监控等功能。这套综合性的实训设备已经在学校投入使用,系统运行稳定、获得了较好的实训效果。     

基于仓位承载重量智能仓储控制系统的设计与仿真

为了弥补智能仓储实训项目硬件设备的不足,基于亚龙YL-158GA1现代电气控制系统实训装置,依据仓储的实际应用,设计开发一款基于仓位承载重量智能仓储控制系统方案,给出系统及主要设备的电气原理图、接线图,开发出系统的PLC控制程序、HMI监控界面,通过调试,系统能够按货物的重量智能入仓,能够满足智能仓储实训项目实践教学的需要.     

基于用户需求的催化工艺过程仿真控制策略设计

借助西门子SMPT1000实训装置和PCS7过程控制平台,在实验室内完成了催化工艺过程控制系统的仿真设计。重点阐述了反应器的进料控制系统、温度控制系统、液位控制系统、开车控制系统、压力控制和检测系统。运行结果表明,控制过程合理、有效且运行稳定,满足了用户需求。反应器的温度、压强和液位3个变量的合理配置能够提高产品浓度和累积量,控制策略具有很强的工业通用性和经济性。     

挖掘机数字化控制实验平台构建

针对传统挖掘机手动控制的不足,设计了基于CAN总线的人机交互界面自动化控制系统和基于ZigBee技术的自组网远程数字化控制系统。通过实验证明该系统稳定可靠,操作方便,能快速准确地完成遥控控制和自动化控制,说明了控制系统设计合理性。基于该实验平台开设多种实验,有利于工程机械专业本科学生掌握先进的数字化控制技术,这对于学生消化吸收所学课程内容有很好的促进作用。     

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.