【正文】 ystems municate with each other directly. Different levels of automation in the mutual munication work systems, require separate handling of the munication channel. Industrial PC required monitoring level from the lower level data acquisition system and transmitted to a puter on. (5) the safe operation of In addition to the PC industry adopt various protective measures, the need for the operation of state industrial PC monitor, monitor the operation of puter systems and software, scheduled inspection procedures specified in the implementation of the cycle. Computer should be able to monitor the power supply, and failure or excessive deviation warning signal was issued. 2. Industrial PC the status quo and development trend Industrial PC now have a wide range of performance and functionality, lowgrade industrial PC with a CRT terminal operators, highgrade industrial workstation with a PC. Thus, highgrade and lowgrade industrial PC workstation performance and the price of overlap, the difference is disappearing, industrial PC and workstations increasingly blurred the boundaries between. Industrial PC workstation is the industrial automation process control system applications excellent choice, standard munication works and the use of graphical operating system makes industrial PC and other equipment to effectively municate. With 32bit and 64bit puter chips and the emergence of use, will be further enhanced industrial PC workstation functionality and performance, but also to a higher future direction. Industrial PC software is in the process of industrial automation control system of a key application. Hardware performance and the improvement of the drop in prices, as well — 7 — as standardization and greater efficiency, better graphics and the use of the operating system to promote industrial PC software is an important factor in development. At present, the rapid development of industrial PC software on the market has thousands of independent software development pany can supply in the industrial PC running on industrial process control configuration software package to meet the rapid growth of the industrial user needs. Industrial PC application of industrial process control software packages are running on the configuration of OS / 2, Windows, and UNIX operating system standard. Industrial process control applications have emerged in large quantities, software development panies can provide a large number of industrial PC on the run for the PLC, DCS, such as industrial automation and control system configuration tools and graphical user interface software. Many PLC, DCS manufacturers development of the software configuration tool for automatic control system has bee an important ponent. They used to replace dedicated industrial PC workstations, for the creation of realtime database, the control loop, graphic footage showed police records, realtime and historical trend data recording and process control, simulation, and other tasks. Now, for the process of surveillance and control, unit control, factory data collection, process optimization control, process control, simulation, statistical qualitycontrol (SQC), the Statistical Process Control (SPC) and expert system for the control of industrial automation and control package has been tremendous developments. DAE applications such as IBM39。 — 1 — 本科生畢業(yè)設(shè)計(jì) (論文 ) 外 文 翻 譯 原 文 標(biāo) 題 The characteristics and trends of PLC DCS and industrial PC 譯 文 標(biāo) 題 PLC、工業(yè) PC 與 DCS 的特點(diǎn)與趨勢(shì) 作者所在系 別 機(jī)械工程系 作者所在專業(yè) 機(jī)械設(shè)計(jì)制造及其自動(dòng)化 作者所在班級(jí) 作 者 姓 名 作 者 學(xué) 號(hào) 指導(dǎo)教師姓名 指導(dǎo)教師職稱 副教授 完 成 時(shí) 間 2020 年 12 月 07 — 2 — 譯文標(biāo)題 PLC、工業(yè) PC 與 DCS 的特點(diǎn)與趨勢(shì) 原文標(biāo)題 The characteristics and trends of PLC, DCS and industrial PC 作 者 Charles 譯 名 查爾斯 國(guó) 籍 美國(guó) 原文出處 Nuts and Volts 2907 The characteristics and trends of PLC, DCS and industrial PC ABSTRACT: At present, widely used in industrial automation systems of the three large industrial PC, DCS and PLC. Here, for their economic and technological standards and development trends described. KEYWORDS: PLC PC DCS automation trends First, the characteristics and Application of PLC 1. PLC Application Early PLC (Programmable Logic Controller, PLC), mainly to replace relay logic control to achieve. With puter technology, munications technology and the rapid development of automatic control technology, the PLC will be the traditional relay control technology and the emerging puter technology and munications technology integration, with high reliability, strong function and flexible, Programming simple, easy to use and a series of advantages, as well as good performance of the industrial environment and control targets of performance in industrial production in a wide range of applications. 1969, the United States Digital Equipment Corporation (DEC) developed the world39。s software platform and the emergence of applications, the application provides a unified software development tool. Application Platform features from the PCindustry data exchange within the factory to the coordination of multiple systems, the standard data interface allows puter control equipment and exchange of data and information works, for integrated information management and control system provides great convenience. Along with the standard graphical operating system continuously improve and develop, process control and industrial automation package greatly enriched, the industrial PC applications will increasingly strong. Three, the characteristics and Application of DCS DCS since its birth, after decades of continuous improvement, development and modernization has been very mature. Compared with the early, the scale of their — 8 — systems, control functions, and other are