环道操纵系统下位软件设计.doc

摘 要 论文的研究工作是以某石油环道控制系统设计为背景展开的，并且详细介绍了通过PLC控制下位系统工作的情况，以自由组态的形式对系统进行控制，使得程序具有更灵活的控制途径和更完备的控制方法。 本文在深入分析ControlNet总线技术的基础上，重点解析了ControlNet在各总线中的优势，同时阐述了其在环道控制系统中的应用，并且以Rockwell出品的RSLogix5000为基础，编写了自由组态的独立控制部分软件。论文的主要论述了各类控制阀门的自由控制，尤其是使用周期性PID控制的方法解决大量运算带来的滞后问题。本文对系统的硬件、选型、软件中流程控制的实现均有较为详细的阐述，对使用的编程软件也有描述，对于本系统的下位控制特点也进行总结说明，比较详尽地叙述了整个系统的相关事宜。 关键词 ControlNet现场总线 RSLogix5000 独立控制 自由组态 Abstract Among the research work on a oil-transport-system. Central Control System is designed to start the background and details of the PLC passed under the control of operation of the system, a free configuration of the system in the form of control, making the process of a more flexible way to control And better control methods. In this paper, in-depth analysis of ControlNet bus technology on the basis of analytical focus of the ControlNet in all of the advantages of bus, on its part, the control system of application, and to Rockwells RSLogix5000-based products, prepared by the Liberal Group State of independent control of the software. Among the main control valve on a variety of free control, particularly the use of cyclical PID control a large number of ways to solve the delay problem of computing. In this paper, the system hardware, selection, process control software in the realization are described in detail, the use of the software programming have described, the system under the control of features have also concluded that more detailed description of the entire system The related issues. Key words ControlNet Fieldbus RSLogix5000 Software Independent Control Free Configuration 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc201658683 第1章 绪论 PAGEREF _Toc201658683 \h 1 HYPERLINK \l _Toc201658684 1.1 课题背景及国内外研究概况 PAGEREF _Toc201658684 \h 1 HYPERLINK \l _Toc201658685 1.2 现场总线和工业控制网络 PAGEREF _Toc201658685 \h 1 HYPERLINK \l _Toc201658686 1.3 课题的建立以及本文完成的主要工作 PAGEREF _Toc201658686 \h 3 HYPERLINK \l _Toc201658687 第2章 ControlNet总线技术 PAGEREF _Toc20165