共查询到20条相似文献,搜索用时 31 毫秒
1.
To eliminate the error
of distance measurement caused by amplitude change from signal attenuation, the method based on dual
thresholds is introduced. Thus the precise ultrasonic measurement is accomplished. Combining wiht the mechanical scanning the on-line
detection of roller shape is implemented. 相似文献
2.
王国维在<红楼梦评论>中以<红楼梦>中贾宝玉的"玉"作为叔本华唯意志哲学中"生活之欲"的代表,认为<红楼梦>提出并解决了"饮食男女,人之大欲存焉"的问题,且<红楼梦>创作的主旨精神是:拒绝一切生活之欲、寻求解脱之道.这与曹雪芹真正的创作意图是不完全相符合的.曹雪芹在<红楼梦>中对宝玉之"玉"和宝黛爱情是持肯定和褒扬态度的,他所舍弃的是过度的贪欲. 相似文献
3.
In order to overcome the
disadvantages of relay-contactor control, i. e. more failures, low reliability and huge maintenance,
the applications of programmable controller (PLC) for coal-preparation in coking process and coke sieve
system are introduced. The selection of the PLCs, design criteria and the anti-interference measures in
installation and test are emphasized. 相似文献
4.
The pressure control strategy of
steam header for two of the 75t/h tied up boilers is improved. One measure is by using the sum of the steam flows of two
boilers as external disturbance to avoid interference of false disturbance signal; another one is implementing
output bumpless switching with the Auto/Manual Swithch,one of the software blocks.The practical operation shows excellent results. 相似文献
5.
Labwindows/CVI在PC与μXL集散系统通信中的应用 总被引:2,自引:0,他引:2
Virtual instrument
technology is the result of instrumental technology and computer technology. The composition of virtual
instrument system and the features of Labwindows/CVI, the developing platform of virtual instrument software are
introduced. By using
the example of communication with μXL distributed control system the application of CVI is
presented. 相似文献
6.
随着智能保障、PHM等技术不断深入应用,可靠性、安全性、测试性(以下简称"三性")的重要性日益凸显,工程中迫切需要解决"三性"重复工作、专业孤岛以及"两张皮"现象;从系统工程出发,首先分析了"三性"主线工作内容,均紧紧围绕功能故障逻辑关系开展,统一建模,实现模型复用;其次,在功能模型基础上映射出故障逻辑关系,更接近故障传递的真实情况,解决"两张皮"现象;然后,全面分析"三性"建模要素和评估内容,对专用部分的信息进行处理,使得"三性"工作不再是孤岛;最后,以燃油系统为例展开了建模评估,基于功能故障逻辑模型,分别进行了可靠性、安全性、测试性建模与评估,实现了模型复用,减少重复工作;专业协同工作,提高了工作效率;紧密结合功能,有效解决"两张皮"现象. 相似文献
7.
LonWorks现场总线的本安技术 总被引:3,自引:0,他引:3
The standard of
intrinsic safety and the design of the parameters of intrinsic safety circuit are
described firstly. The
the intrinsic safety assembly of IS-78 and its specification are introduced. The connection between IS-78, the physical channel of LonWorks, and the network of safety area is discussed finally. 相似文献
8.
DCS的远程诊断和维护 总被引:2,自引:0,他引:2
Combining with the I/A system the effect and
implementing method of remote diagnosis and maintenance of the distributed control system (DCS) are presented. 相似文献
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12.
程序温控仪中PID参数自整定算法 总被引:12,自引:5,他引:7
A self-tuning algorithm for PID parameters which is suitable for
programmable temperature controller is stated. The principle of the algorithm and the design of software
are introduced. The
algorithm has been used in practical control system with excellent control results. 相似文献
13.
周丽涛 《计算机工程与科学》2006,28(Z1):35-36
本文通过总结<计算机软件技术基础>课程的讲授,在如何提高学生程序设计应用能力方面作者提出了自己的观点,并从"帮助学生认清C语言的重要性"、"提高学生学习程序设计的兴趣"、"注重培养学生逻辑思维能力"、"课堂上充分调动学生的积极性"、"帮助学生学会自主学习"、"开展课外讲座,帮助学生建立正确的学习观"等六个方面具体详细地阐述了提高学生程序设计应用能力的方法. 相似文献
14.
15.
<正>观点三"三选会"这一针对"80后"学生择业的词语一经见报,立即引起众多媒体的广泛讨论。关于"80后"大学生应及早"断奶"的呼声不断加强,仿佛不割断父 相似文献
16.
从INTERKAMA‘99看现场总线 总被引:3,自引:2,他引:3
The exhibits of the main
field bus products on INTERKAMA′99 Exhibition and their applications are introduced
briefly. The
developing trend is forecasted. 相似文献
17.
调节阀流量系数与可调比关系的研究 总被引:4,自引:0,他引:4
The relationship between
flow coefficient and turndown ratio is discussed based on the requirements of practical
applications. Thus it
is stated that the turndown ratio might be considered as the characteristic parameter of
the flow characteristic curve. On this basis the difference between the National Standard and International
Standard in regulations of the deviation of flow coefficient is stated. Through relevant calculations, the demerits existing in
National Standard and product design are revealed. 相似文献
18.
The composition, structure of the scale body, weighing instrument and
transducer of the electronic scale for overhead crane are introduced.
Several commonly used structures of the
weighing body in electronic scale for overhead crane are emphasized.
The system accuracy offered by different body
structure is presented. The common structure and the forced conditions of the main components in such
electronic scales are analyzed and the criteria should be followed in design are described. 相似文献
19.
<正>2010年,天地(常州)自动化股份有限公司的4项科研成果获得专利。其中"一种粉尘浓度传感器"、"一种煤矿安全监控系统"为实用新型专利,专利号分别为ZL200920159093.7、ZL200920309329.0;"基于IP 相似文献
20.
胶州市供电公司是一个拥有总资产9.15亿元的国有企业,现有职工385名,农电工604名.公司曾被国家电网公司命名为国家"一流县供电企业";连续侣年保持"省级文明单位"称号;多年保持省"先进县供电企业"称号;被山东省经贸委命名为"山东省学习型组织示范基地";被青岛市授予"行风建设示范窗口单位"称号;公司领导先后荣获"富民兴鲁"劳动奖章、"青岛市劳动模范"等荣誉称号. 相似文献