机械类专业英语翻译.doc

1、Flexible and Smart Online Monitoring and Fault DiagnosisSystem for Rotating MachineryAbstract Monitoring the vibration signals of rotating machinery, ulteriorly, assessing the safety of equipment plays a significant role in ensuring the security of equipment and in saving maintenance fee. This paper

2、 integrated the idea of “configuration” in the industry control software, developed the “flexible” network-based online monitoring and fault diagnosis system. The network topology, configuration module, database, data acquisition workstation and monitoring components were presented. With the smart d

3、ata acquisition strategy and strong adaptive monitoring tools, the system can be applied on kinds of rotating machinery, and the practical application of the system was introduced.Keywords online monitor, flexible system, smart system,configuration, rotating machineryCONCLUSIONBased on the developme

4、nt trend of the network-based online monitoring and diagnosis system, this paper introduced the idea of “flexible” of ICS and the smart data acquisition strategy, developed the configurable and smart online monitor and diagnosis system with strong flexibility. The system can be applied on kinds of r

5、otating machinery. The smart signal analysis tools can provide the appropriate diagnosis method kinds of equipment, hence can level up the accuracy of fault diagnosis and condition evaluation.I. INTRODUCTIONWith the development of the modern technology, a variety of rotating machinery (such as steam

6、 turbine, fan,wind turbine, etc.) raises the level of automatic operation.Due to the significant roles of the rotating machinery in the modern production process, to ensure the safety, reliability,economical and optimized operation, and to evaluation of thecondition of the current equipment have bec

7、ome very important research fields. Thereinto, condition monitoring and fault diagnosis have been put more attention 1.The database technology and network technology were introduced in the current online monitor and fault diagnosis system for rotating machinery. It not only enhanced the technology o

8、f online condition monitor and provided more sufficient and reliable data for the fault diagnosis, but alsomade it possible to share the machinery information,ulteriorly to establish the fault analysis and diagnosis center in the special institute and provide the remote technique support for factory

9、 2, 3, 4.However, for the requirements of equipment management nowadays, the current network-based online monitoring system remains some defects as follows: (a) the measure point (MP), the interfaces of the software and the hardware had been fixed before developing of the monitoring system, therefor

10、e it was difficult to adapt the modern plant with numerous and various equipment; (b) the object of the current system was always the machinery or equipment, and it was difficult to achieve the goal of centralized management to the modern plant; (c) the data acquisition strategy was simple and canno

11、t be changed with the change of the equipment state, and it was easily lead to the miss of the critical fault data and effected the accuracy of the fault diagnosis; (d) the tools and methods for signal analysis and fault diagnosis were simple and could not meetthe demand of information fusion5, 6.Th

12、erefore, developing the system efficiently and reliably become a key problem in the development of modern monitoring system. The successful application of Industrial Control Software (ICS) provides a good idea for the development of network-based Online Monitoring and Diagnosis System (OMDS). Althou

13、gh the ICS emphasize on control function while the OMDS put more attention on the data acquisition, signal analysis and save of long-running data, the “configurable” approach during the development of ICS can make the OMDS well adapt to various machinery and become “flexible”. Additionally, the OMDS

14、 become more smarted by integrating the information fusion methods and neutral network with normal frequency-spectrum analysis methods, and enhance the capability of fault diagnosis and safety assessment for rotating machinery 7.II. NEEDS ANALYSIS FOR CONFIGURABLE SYSTEMIII. DESIGN AND IMPLEMENT OF

15、OMDSA. The topology of the network-base systemB. Design of the configuration moduleC. Design of databaseD. Design of the hardware of the data acquisitionE. Design of monitoring and analysis moduleIV. APPLICATION OF OMDSProfessional introductionMy major is mechanical manufacturing and automation, it

16、is to combine the mechanical equipment and automation by the way of computer, forming a series of advanced manufacturing technology, including CAD (Computer Aided Design), CAM (Computer Aided Manufacturing), FMC (Flexible Manufacturing System) and so on, and finally forms the large-scale computer in

17、tegrated manufacturing system (CIMS) which make the traditional mechanical process get a qualitative leap. This professional directly reflect the modernization and industrialization level of a country, it relates to the design of mechanical industry of manufacturing, technology development, applicat

18、ion study, operation management and sales management and so on , it is a large business of social demand .The ability of the machinery manufacturing, directly affect the development of the whole society of industry. Recently the level of mechanical engineering and automation between China and the de

19、veloped countries has been gradually reduced. With the demands of our country modernization, development in the aerospace, shipbuilding, mining industry, machinery manufacturing and automation needs more rapid development, and has great development space. At school we must learn PLC (programmable lo

20、gic controller), grasp the weak electrical appliance control, the use of servo system and AC servo motor, the general design of electric circuit, and be familiar with the metal material, metal heat treatment and manufacturing technology, mechanical design and other professional knowledge.The profess

21、ional employment situation is very good, many enterprises relate to machinery we can participate in , and even management can also do. Graduate students can engage in industrial production department of mechanical product design and development, manufacturing, tooling design, production process mana

22、gement, application of numerical control technology, industrial automation production management, computer software application, marketing and other aspects of the work, also can take part in teaching and research work in Colleges and universities or scientific research departments.The direction of

23、dissertation in the futureMy research is superhard nano-micron PVD films applied research , PVD is the abbreviation of physical vapor deposition , it is a physical method used in the condition of vacuum , the surface of the solid or liquid material vaporized into gas atoms, molecules or parts of ion

24、ized into a plasma , and through the low pressure gas ( or plasma ) process , depositing on the substrate surface with a thin film for special functions . Physical vapor deposition methods include vacuum deposition , sputtering , arc plasma plating, ion plating, electron beam evaporation and molecul

25、ar epitaxy . Not only can the metal or alloy film be deposited, many materials like compounds, ceramics, semiconductor, polymer film can also be deposited,it is a new material with wide application prospect in manufacturing technology. The superhard film made by this technology not only has high har

26、dness, and ultrathin, high temperature resistance, no pollution, almost zero emissions, it is suitable for tools, spare parts and abrasion resistance, anti-oxidation, anti-corrosion, self lubrication of the surface of friction and wear and other special properties, it is a technology of the most pro

27、mising and valuable application in the modern surface engineering technology. the simplest and most effective way to go into a field is to find a discussion of this field monographs or textbooks, when the basic concepts in this field as well as the correlation between the meaning is clear, just go t

28、o read the papers in this field, we will know the score and grasp them. Therefore, before the thesis proposal in October of next year , I will seriously learning materials, and finally understand and master the papers of instructors and the various papers about PVD coating technology at home and abr

29、oad , step by step and in good order to learn everything, in the the thesis proposal of the day can not panic disorder and keep calm .柔性的和智能的在线监测与故障诊断的旋转机械系统旋转机械振动信号的监测，进一步地说，在确保设备的安全性和节省维修费用上设备安全性的评估起到非常重要的角色。本文整合了工业控制软件中的“配置”理念，开发出“柔性的”基于网络的在线监测和故障诊断的系统。该网络的拓扑结构、配置模块、数据库、数据采集工作站和监视组件已得到介绍。随着智能数据采集

30、策略和强大的适应监测工具的开发应用，该系统可以应用于各种旋转机械，而且该系统的实际应用也以得到介绍。关键词：在线监测，柔性系统，智能系统，结构配置，旋转机械基于以网络为基础的在线监测和故障诊断系统的发展趋势，本文介绍了因特网连接共享和智能的数据采集策略“柔性”的思想，开发出具有很强的灵活性的结构配置和智能的在线监测与诊断系统。该系统可以用于各种旋转机械。智能信号分析工具能为各种设备提供适当的诊断方法，因此能够提高故障诊断和工况评估的准确性。引言随着现代科技的发展，各种各样的旋转机械（如蒸汽机，风扇，风力发电机组等等）提升了自动控制的层次。由于旋转机械在现代生产过程中的重要作用，以确保安全性，可

31、靠性，经济性和优化操作，并评价当前设备的状态已成为非常重要的研究领域。其中，状态监测和故障诊断已投入更多的关注。数据库技术和网络技术已经在旋转机械当前的在线监测和故障诊断系统中介绍过，它不仅提高了在线状态监测技术和为故障诊断提供更充分更可靠的数据，而且使得机械信息共享成为可能，进而在专门研究机构建立故障分析和诊断中心，为制造厂提供远程技术支持。然而，对于当前的设备管理要求，目前的这种基于网络在线监测系统仍然存在一些缺陷，如下：（a)测量点（MP),在监测系统研发之前，系统的软件和硬件的接口已经被固定了，因此该系统很难适应现代工厂众多和各种各样的设备；（b)当前系统的对象仍然是机械装置或者设备，

32、现代工厂很难实现集中管理的目标；（c)数据采集策略很简单，也不能随着设备状态的变化而变化，而且很容易导致决定性错误数据的缺失和影响故障诊断的准确性；（d)信号分析和故障诊断的工具和方法简单而且不能满足信息融合的需求。因此，有效地和可靠地开发系统已成为现代监测系统发展的关键问题。工业控制软件（ICS)的成功应用为基于网络在线监测和故障诊断系统（OMDS)提供了一个好的思想。尽管工业控制软件强调控制功能而在线监测和故障诊断系统专注于数据采集，信号分析和长期数据的保存，在工业控制软件的发展过程中“结构配置”的方法能使得在线监测和故障诊断系统很好的适应各种机械装置和成为“柔性化”。此外，在线监测和故障诊断系统通过集成的信息融合法和带有正常频谱的神经网络分析法而变得更加智能，它提高了故障诊断和旋转机械的安全评估能力。可配置的系统需求分析在线监测和诊断系统的实施基于网络系统的拓扑结构配置模块的设计数据库的设计数据采集软件的设计监测和分析模块的设计在线监测和诊断系统的应用专业介绍：我的专业是机械制造及其自动化，它是