發(fā)布時(shí)間：2018-05-30 04:03

  本文選題：水泥聯(lián)合粉磨系統(tǒng) + PID控制�。� 參考：《濟(jì)南大學(xué)》2015年碩士論文

【摘要】：水泥在我國(guó)的現(xiàn)代化建設(shè)中有著廣泛的應(yīng)用。我國(guó)水泥生產(chǎn)總量巨大,隨之而來的是原材料的大量開發(fā)而造成的環(huán)境破壞。環(huán)境保護(hù)問題受到了全世界的廣泛關(guān)注,水泥生產(chǎn)過程中提高原材料的利用率和水泥的生產(chǎn)質(zhì)量也逐漸被重視。本課題的水泥聯(lián)合粉磨系統(tǒng)就是利用智能控制系統(tǒng)提高原材料的利用率和水泥生產(chǎn)的質(zhì)量,生產(chǎn)線采用常規(guī)控制與智能控制相結(jié)合的控制系統(tǒng)。此套控制系統(tǒng)的成功運(yùn)用能夠在一定程度上解決原材料利用率低等不足。本課題的研究重點(diǎn)是水泥生產(chǎn)過程中稱重倉的倉重、水泥磨負(fù)荷和循環(huán)風(fēng)機(jī)轉(zhuǎn)速的控制方案。各個(gè)控制對(duì)象之間必須進(jìn)行良好的配合才能保證水泥聯(lián)合粉磨系統(tǒng)的正常運(yùn)行。水泥聯(lián)合粉磨系統(tǒng)結(jié)構(gòu)的復(fù)雜性決定了整個(gè)系統(tǒng)控制變量的多樣性,而系統(tǒng)控制變量的多樣性又決定了控制策略和控制器的復(fù)雜性。本設(shè)計(jì)的主要任務(wù)就是設(shè)計(jì)出控制器,使整個(gè)聯(lián)合粉磨系統(tǒng)工作穩(wěn)定靈活,能源利用效率達(dá)到近一步優(yōu)化。本課題分析了水泥聯(lián)合粉磨系統(tǒng)各個(gè)回路之間的關(guān)系,并根據(jù)此關(guān)系設(shè)計(jì)出智能控制開關(guān),選擇不同工況下的控制策略。Bang-Bang控制對(duì)誤差大的參數(shù)能夠做到快速反應(yīng);模糊PID加權(quán)控制能夠吸取單獨(dú)的模糊控制和PID控制各自的長(zhǎng)處,完成對(duì)稱重倉回路的控制;模糊PID自整定控制則在誤差允許的范圍內(nèi)完成對(duì)水泥磨的自動(dòng)智能控制;而帶Smith預(yù)估的PI控制則解決了水泥聯(lián)合粉磨的滯后問題,用這種方法完成對(duì)循環(huán)風(fēng)機(jī)的控制。由此四種控制的切換完成對(duì)復(fù)雜的水泥聯(lián)合粉磨系統(tǒng)的控制。本文生產(chǎn)線的DCS系統(tǒng)采用ABB公司的AC800F系統(tǒng)。智能控制器用VB6.0進(jìn)行編寫。運(yùn)用OPC接口技術(shù),完成智能控制器與DCS系統(tǒng)的數(shù)據(jù)交換。通過參數(shù)的調(diào)整完成整個(gè)水泥生產(chǎn)過程的智能控制。
[Abstract]:Cement is widely used in the modernization construction of our country. The total amount of cement production in China is huge, followed by a large number of raw materials development caused by environmental damage. Environmental protection has been paid more and more attention all over the world. In the process of cement production, increasing the utilization ratio of raw materials and the quality of cement production have been paid more and more attention. The cement grinding system of this subject is to use intelligent control system to improve the utilization ratio of raw materials and the quality of cement production. The production line adopts the combination of conventional control and intelligent control system. The successful application of this control system can solve the problem of low utilization rate of raw materials to some extent. This paper focuses on the control scheme of the weight of the weighing bin, the load of cement mill and the rotating speed of circulating fan in cement production process. In order to ensure the normal operation of cement joint grinding system, good coordination must be carried out among each control object. The complexity of cement grinding system determines the diversity of control variables, and the diversity of system control variables determines the complexity of control strategy and controller. The main task of this design is to design the controller to make the whole joint grinding system work stably and flexibly, and achieve the further optimization of energy utilization efficiency. In this paper, the relationship between each loop of cement grinding system is analyzed, according to which the intelligent control switch is designed, and the control strategy under different working conditions. Bang-Bang control can react quickly to the parameters with large error. Fuzzy PID weighted control can absorb the advantages of individual fuzzy control and PID control to complete the control of symmetrical heavy duty loop, and fuzzy PID self-tuning control can control cement mill automatically and intelligently within the range of error. Pi control with Smith prediction solves the lag problem of cement combined grinding, and this method is used to complete the control of circulating fan. The four kinds of control are switched to complete the control of the complex cement grinding system. The DCS system of this production line adopts the AC800F system of ABB Company. The intelligent controller is written with VB6.0. The data exchange between intelligent controller and DCS system is completed by using OPC interface technology. The intelligent control of the whole cement production process is completed by adjusting the parameters.
【學(xué)位授予單位】：濟(jì)南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ172.63;TP273

【共引文獻(xiàn)】

相關(guān)期刊論文 前1條

1 彭長(zhǎng)壽;;水泥聯(lián)合粉磨改半終粉磨的提產(chǎn)改造[J];中國(guó)水泥;2014年07期

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本文編號(hào)：1953820