發(fā)布時(shí)間：2018-04-27 13:20

  本文選題：精密陶瓷 + 溫度控制��； 參考：《合肥工業(yè)大學(xué)》2016年碩士論文

【摘要】：精密陶瓷燒成過程中的溫度變化具有非線性、時(shí)變性和滯后性的特點(diǎn),難以得到準(zhǔn)確的數(shù)學(xué)模型和參數(shù),給精確控制帶來了巨大的困難。本文重點(diǎn)研究如何更加有效的控制陶瓷燒成過程中的溫度,從而得到性能最優(yōu)的陶瓷,又能節(jié)約能源。文中首先研究了國(guó)內(nèi)外溫度控制系統(tǒng)的現(xiàn)狀,設(shè)計(jì)了一種基于DSP的精密陶瓷工藝處理爐溫度控制系統(tǒng)。該系統(tǒng)以ADSP-BF506F為溫度控制系統(tǒng)核心,DSP輸出信號(hào)通過改變加熱功率來控制溫度,用K型熱電偶檢測(cè)溫度,鍵盤和LCD顯示屏為人機(jī)交互接口,組成閉環(huán)溫度控制系統(tǒng)；在系統(tǒng)軟件上以VisualDSP++為集成開發(fā)環(huán)境,采用C語(yǔ)言編寫源程序,主要對(duì)A/D轉(zhuǎn)換與溫度檢測(cè)程序、模糊PID算法程序、LCD顯示程序等進(jìn)行了開發(fā)設(shè)計(jì)；建立了陶瓷爐溫度控制的數(shù)學(xué)模型,并給出了模糊PID控制器的具體設(shè)計(jì)方法,通過MATLAB工具分別對(duì)常規(guī)PID和模糊PID控制方法進(jìn)行了仿真分析。實(shí)驗(yàn)結(jié)果表明模糊PID控制調(diào)節(jié)時(shí)間短、超調(diào)量小且穩(wěn)態(tài)誤差小,抗干擾能力強(qiáng),可以達(dá)到控制要求。本文設(shè)計(jì)的精密陶瓷工藝處理爐溫度控制系統(tǒng)具有結(jié)構(gòu)簡(jiǎn)單、運(yùn)行穩(wěn)定可靠,且具有較高的控制精度,滿足實(shí)際應(yīng)用需求。
[Abstract]:The temperature variation in the firing process of precision ceramics has the characteristics of nonlinear, time-varying and hysteresis. It is difficult to obtain accurate mathematical model and parameters, which brings great difficulties to accurate control. This paper focuses on how to control the temperature of ceramic firing process more effectively, so as to obtain the best performance of ceramics, but also save energy. Firstly, the present situation of temperature control system at home and abroad is studied, and a temperature control system of precision ceramic process treatment furnace based on DSP is designed. In this system, the output signal of ADSP-BF506F is used as the core of the temperature control system to control the temperature by changing the heating power, the temperature is detected by K thermocouple, and the keyboard and LCD display screen are used as the man-machine interface to form the closed-loop temperature control system. In the system software, VisualDSP is used as the integrated development environment and C language is used to write the source program. The A- / D conversion and temperature detection program, the fuzzy PID algorithm program and the LCD display program are mainly developed and designed. The mathematical model of ceramic furnace temperature control is established, and the specific design method of fuzzy PID controller is given. The conventional PID and fuzzy PID control methods are simulated and analyzed by MATLAB tool. The experimental results show that the fuzzy PID control has the advantages of short adjustment time, small overshoot, small steady-state error and strong anti-interference ability, which can meet the control requirements. The temperature control system of the precision ceramic process treatment furnace designed in this paper has the advantages of simple structure, stable and reliable operation, and high control precision, which meets the practical application requirements.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TQ174.6;TP273

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