本文選題：火道溫度　切入點：減法聚類　出處：《安徽工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：焦爐煉焦的過程具有大時滯、大慣性、非線性、強耦合等特點,其中火道溫度是焦爐加熱過程中控制的主要參數(shù)。火道溫度的穩(wěn)定性直接關(guān)系到焦炭的成熟度以及爐體的使用壽命,是焦爐煉焦生產(chǎn)的關(guān)鍵與核心。如何建立其精確的關(guān)系模型,進而對焦爐加熱過程的進行優(yōu)化控制,對于降低焦爐能耗、提高焦炭成熟度、延長爐體使用壽命、減少污染物排放等方面都具有非常重要的現(xiàn)實意義。本文介紹了焦爐煉焦的生產(chǎn)過程,并通過分析煉焦過程的大量現(xiàn)場數(shù)據(jù),運用基于減法聚類與模糊C-均值聚類相結(jié)合的模糊T-S模型辨識算法,完成了火道溫度關(guān)系模型的辨識。該算法簡化了前提結(jié)構(gòu)辨識的過程,并在此基礎(chǔ)上運用模糊神經(jīng)網(wǎng)絡(luò)結(jié)構(gòu)對模型參數(shù)進行學(xué)習(xí),獲得了焦爐煉焦的全局化模型。通過MATLAB仿真驗證了該模型具有較高的辨識精度,為火道溫度控制的現(xiàn)場應(yīng)用提供了理論基礎(chǔ)。本文利用串級控制的方案將得到的全局化模型通過模糊PID控制器來實現(xiàn)對火道溫度的控制,并對比分析模糊PID和常規(guī)PID控制算法的仿真效果。最后介紹了分布式控制系統(tǒng),并將控制算法運用在浙大中控JX-300XP系統(tǒng)。文章列舉了對應(yīng)的控制流程圖及組態(tài)圖,得到控制方案運行前后的機/焦側(cè)溫度變化趨勢圖。根據(jù)對變化趨勢圖的分析,表明控制方法在系統(tǒng)控制中響應(yīng)速度快,能有效地控制溫差,滿足生產(chǎn)現(xiàn)場的要求,并且能很好地降低能耗。
[Abstract]:The coke oven coking process has the characteristics of large time delay, large inertia, nonlinear, strong coupling, etc. The stability of the channel temperature is directly related to the maturity of coke and the service life of furnace body. It is the key and core of coke oven coking production. How to establish its accurate relation model and how to optimize the control of coke oven heating process can reduce the energy consumption of coke oven, improve the maturity of coke and prolong the service life of furnace body, so as to reduce the energy consumption of coke oven, increase the maturity of coke and prolong the service life of furnace body. The reduction of pollutant emission is of great practical significance. This paper introduces the production process of coke oven coking, and analyzes a large number of field data of coking process. The fuzzy T-S model identification algorithm based on subtraction clustering and fuzzy C-means clustering is used to identify the temperature relation model of fire path. The algorithm simplifies the process of premise structure identification. On this basis, fuzzy neural network structure is used to study the model parameters, and the global coking model of coke oven is obtained. The MATLAB simulation shows that the model has high identification accuracy. It provides a theoretical basis for the field application of fire channel temperature control. In this paper, the global model obtained by cascade control is realized by fuzzy PID controller. The simulation results of fuzzy PID and conventional PID control algorithm are compared and analyzed. Finally, the distributed control system is introduced, and the control algorithm is applied to the JX-300XP system of Zhejiang University. The corresponding control flow chart and configuration diagram are listed in this paper. According to the analysis of the change trend chart, the response speed of the control method in the control system is fast, the temperature difference can be effectively controlled, and the requirement of the production site can be satisfied. And it can reduce energy consumption very well.
【學(xué)位授予單位】：安徽工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TQ520.5;TP273

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