透過您的圖書館登入
IP:18.116.40.177
  • 學位論文

以模糊理論為基礎之電熱系統溫度控制器設計

The Temperature Controller Design of an Electrical Heating System Based on the Fuzzy Theory

指導教授 : 陳柏宏
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


本論文利用ARM Cortex-M3微控制器實現以模糊理論控制之電熱系統。此電熱系統以電熱管與風扇作為受控體,由於溫度控制中有許多不定變因或非線性特性,其穩定度對於一般以理論建構的數學模型是一大挑戰。本論文融入了模糊理論之優點,減少建立複雜的數學模型,使用微控制器依照模糊理論來實現模糊化介面、模糊規則庫、模糊推論引擎、解模糊化介面等過程,其後利用解模糊化的值來調整電熱管之輸出功率與開關風扇。實驗結果顯示,相較於傳統過溫斷電的控制方式,此系統能有效地降低溫度振幅,將溫度誤差控制於可容許範圍內,藉以將溫度控制在操作者所設定的溫度值。

並列摘要


In this thesis, we use ARM CORTEX-M3 microcontroller to realize an fuzzy logic controlled electrical heating system. There are many uncertain factors or nonlinear characteristics in temperature control, so it is a big challenge to construct a mathematical model for temperature stability by using the theory. Therefore, this thesis applies the advantages of fuzzy theory to eliminate the complicated mathematical models. We use the microcontroller to implement fuzzification interface, fuzzy rule base, fuzzy inference engine, defuzzification processes according to the fuzzy theory, and then the heating power and the fan is adjusted by the defuzzification value. Experimental results show that compared with the traditional over-temperature shutdown control, the proposed system can effectively reduce its temperature variation, so as to control temperature at the presetting value within a tolerable error range.

參考文獻


[1]洪肇聰,2002,“FPGA-Based冷氣機數位式溫度控制IC設計與實現”,國立中興大學電機工程學系。
[2]林建成,2012,“小型冰箱的熱電致冷散熱模組製作”,虎尾科技大學機械與機電工程研究所。
[3]張進財,2008,“恆溫高頻加熱系統之研製”, 國立彰化師範大學機電工程學系。
[4]N. Minorsky, “Directional Stability of Automatically Steered Bodies”, Journal of America Society of Naval Engineers, vol.42, no.2,pp.280-309,1922.
[5]Ziegler, J. G. and N. B. Nichols, “Optimum Settings for Automatic Controllers”, Transaction of the ASME,vol.64,pp.759-768, 1942.

延伸閱讀