本文關(guān)鍵詞：過程控制實(shí)驗(yàn)平臺(tái)設(shè)計(jì)與實(shí)驗(yàn)項(xiàng)目研發(fā)　出處：《陜西科技大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 過程控制實(shí)驗(yàn)平臺(tái) 實(shí)驗(yàn)項(xiàng)目研發(fā) 實(shí)物實(shí)驗(yàn) 半實(shí)物仿真 實(shí)驗(yàn)教學(xué)

【摘要】：過程控制是自動(dòng)化及其相關(guān)專業(yè)的重要專業(yè)課,具有理論性與實(shí)踐性并重的特點(diǎn)。切實(shí)掌握過程控制課程內(nèi)容,實(shí)驗(yàn)教學(xué)環(huán)節(jié)必不可少。然而,許多高校實(shí)驗(yàn)系統(tǒng)并不完善,導(dǎo)致過程控制實(shí)驗(yàn)教學(xué)趨于形式化,學(xué)生對(duì)實(shí)驗(yàn)的理解停留于表面。因此,設(shè)計(jì)、開發(fā)一套性能優(yōu)越、功能完善的過程控制實(shí)驗(yàn)平臺(tái)對(duì)提高過程控制教學(xué)質(zhì)量和培養(yǎng)學(xué)生工程實(shí)踐能力具有重要意義。在陜西省重點(diǎn)科技創(chuàng)新團(tuán)隊(duì)計(jì)劃項(xiàng)目(項(xiàng)目編號(hào):2014KCT-15)的資助下,本文將實(shí)物實(shí)驗(yàn)與半實(shí)物仿真實(shí)驗(yàn)結(jié)合,圍繞過程控制實(shí)驗(yàn)平臺(tái)的搭建和實(shí)驗(yàn)項(xiàng)目的研發(fā)開展研究,論文的主要工作可分述如下:(1)過程控制實(shí)驗(yàn)平臺(tái)的硬件與軟件設(shè)計(jì)根據(jù)對(duì)過程控制實(shí)驗(yàn)平臺(tái)的需求分析,設(shè)計(jì)了一套基于西門子S7-300PLC的過程控制實(shí)驗(yàn)平臺(tái)。硬件方面,設(shè)計(jì)、制作了一套小型化的多參數(shù)三容水箱實(shí)驗(yàn)裝置,用以模擬一階過程、二階過程、大時(shí)滯過程等典型環(huán)節(jié);以該實(shí)驗(yàn)裝置為被控對(duì)象,設(shè)計(jì)了控制系統(tǒng)硬件部分,涉及測(cè)控點(diǎn)數(shù)統(tǒng)計(jì)、元器件選型、控制柜和MCC柜設(shè)計(jì)與制作等。軟件方面,包括基于STEP7的實(shí)驗(yàn)項(xiàng)目程序開發(fā)與調(diào)試、基于WinCC的監(jiān)控界面設(shè)計(jì)、上位機(jī)與下位機(jī)的以太網(wǎng)通訊實(shí)現(xiàn)等。(2)實(shí)驗(yàn)平臺(tái)實(shí)物實(shí)驗(yàn)項(xiàng)目的研發(fā)在已搭建的實(shí)驗(yàn)平臺(tái)上,以過程控制實(shí)驗(yàn)要求為目標(biāo),設(shè)計(jì)了一系列實(shí)物實(shí)驗(yàn)項(xiàng)目。實(shí)驗(yàn)項(xiàng)目涉及液位、溫度、流量、壓力四類常見過程參量的檢測(cè)與控制,設(shè)計(jì)了被控對(duì)象建模實(shí)驗(yàn)、單回路控制實(shí)驗(yàn)等簡(jiǎn)單控制實(shí)驗(yàn)項(xiàng)目,以及液位串級(jí)、流量比值等復(fù)雜控制實(shí)驗(yàn)項(xiàng)目,并分別給出了實(shí)驗(yàn)設(shè)計(jì)方案、實(shí)驗(yàn)測(cè)試結(jié)果及實(shí)驗(yàn)指導(dǎo)書。進(jìn)一步以蟻群算法為例闡述了智能算法在實(shí)驗(yàn)平臺(tái)上進(jìn)行實(shí)驗(yàn)驗(yàn)證的方法。(3)實(shí)驗(yàn)平臺(tái)半實(shí)物仿真實(shí)驗(yàn)項(xiàng)目的研發(fā)針對(duì)半實(shí)物仿真的原理與特點(diǎn),實(shí)現(xiàn)了基于MATLAB與WinCC的半實(shí)物仿真。采用OPC技術(shù)實(shí)現(xiàn)了MATLAB與WinCC的雙向數(shù)據(jù)交換,為了使實(shí)驗(yàn)平臺(tái)更為緊湊,使用C腳本完成了MATLAB在WinCC中的集成。在此基礎(chǔ)上,設(shè)計(jì)并實(shí)現(xiàn)了單回路液位控制及液位串級(jí)控制兩個(gè)半實(shí)物仿真實(shí)驗(yàn)項(xiàng)目,對(duì)方案的可行性進(jìn)行了驗(yàn)證。在相同控制參數(shù)及相同被控對(duì)象條件,比較了半實(shí)物仿真實(shí)驗(yàn)與實(shí)物實(shí)驗(yàn)結(jié)果的異同點(diǎn),并分析了其原因。本實(shí)驗(yàn)平臺(tái)集實(shí)物實(shí)驗(yàn)與半實(shí)物仿真實(shí)驗(yàn)于一體,將相同的實(shí)驗(yàn)以不同類型的實(shí)驗(yàn)方式呈現(xiàn),可以加深學(xué)生對(duì)課程內(nèi)容的理解,MATLAB的引入能夠降低編程難度,提高學(xué)生設(shè)計(jì)實(shí)驗(yàn)的自主性和實(shí)驗(yàn)平臺(tái)的開放性。此外,本實(shí)驗(yàn)平臺(tái)還能為廣大科研人員提供先進(jìn)控制理論實(shí)驗(yàn)驗(yàn)證的便捷手段。
[Abstract]:Process control is an important professional course of automation and its related major, with the characteristics of both theory and practice. It is necessary to grasp the course content of process control and experiment teaching. Many experimental systems in colleges and universities are not perfect, which leads to the formalization of the process control experiment teaching, and the students' understanding of the experiment stays on the surface. Therefore, the design and development of a set of performance is superior. The process control experiment platform with perfect function is of great significance to improve the teaching quality of process control and cultivate the students' engineering practice ability. Project number: 2014KCT-15). In this paper, the physical experiment and the hardware-in-the-loop simulation experiment are combined, and the research is carried out around the construction of the process control experimental platform and the research and development of the experimental project. The main work of this paper can be divided as follows: (1) the hardware and software design of the process control experiment platform is analyzed according to the requirement of the process control experiment platform. A process control experiment platform based on Siemens S7-300 PLC is designed. In hardware, a miniaturized multi-parameter three-tank experimental device is designed to simulate the first-order process. Second order process, large delay process and other typical links; Taking the device as the controlled object, the hardware part of the control system is designed, which involves the statistics of the number of measurement and control points, the selection of components, the design and manufacture of the control cabinet and MCC cabinet, and so on. Including the development and debugging of experimental program based on STEP7 and the design of monitoring interface based on WinCC. The realization of Ethernet communication between the upper computer and the lower computer, etc.) the research and development of the physical experimental project of the experimental platform is based on the established experimental platform, which aims at the requirements of the process control experiment. A series of physical experiment items are designed. The experiment items involve the detection and control of four kinds of common process parameters: liquid level, temperature, flow rate and pressure, and the controlled object modeling experiment is designed. Simple control experiment items such as single loop control experiment, and complex control experiment items such as liquid level cascade, flow ratio and so on, are given respectively. Experimental test results and experimental instructions. Further, taking ant colony algorithm as an example, the method of intelligent algorithm for experimental verification on the experimental platform is described. The research and development of the hardware-in-the-loop simulation experiment project aims at the principle and characteristics of the hardware-in-the-loop simulation. The hardware-in-the-loop simulation based on MATLAB and WinCC is realized, and the two-way data exchange between MATLAB and WinCC is realized by using OPC technology, in order to make the experiment platform more compact. C script is used to complete the integration of MATLAB in WinCC. On this basis, two hardware-in-the-loop simulation experiment projects are designed and implemented, that is, single loop level control and liquid level cascade control. The feasibility of the scheme is verified. The similarities and differences between the hardware-in-the-loop simulation experiment and the physical experiment results are compared under the same control parameters and the same controlled object conditions. This experiment platform integrates the physical experiment and the hardware-in-the-loop simulation experiment, and presents the same experiment in different kinds of experimental ways, which can deepen the students' understanding of the course content. The introduction of MATLAB can reduce the difficulty of programming, improve the autonomy of the experiment design and the openness of the experimental platform. The experimental platform can also provide convenient means for scientific research personnel to verify advanced control theory.
【學(xué)位授予單位】：陜西科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP273

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