冰箱溫度控制器的設(shè)計

目  錄
摘  要 1
引  言 2
1  總的設(shè)計方案 3
1.1  總體方案 3
1.2 方案選擇  5
2  系統(tǒng)硬件設(shè)計 7
2.1 系統(tǒng)結(jié)構(gòu)圖 7
2.2 微處理器 7
2.3 溫度傳感器 9
2.4顯示電路 11
2.5 功能按鍵 12
2.6 壓縮機，風(fēng)機，電磁閥控制 13
2.7 過欠壓保護 13
3  模糊控制算法 15
3.1對精確值的模糊化處理 16
3.2模糊推理規(guī)則的歸納 17
3.3模糊量向精確量的轉(zhuǎn)化 18
4   系統(tǒng)軟件設(shè)計 19
4.1 主程序 19
4.2中斷服務(wù)程序 20
5  技術(shù)總結(jié) 21
6 結(jié)束語 22
7參考文獻 23

摘要
近年來隨著計算機在社會領(lǐng)域的滲透，模糊控制電冰箱的成功開發(fā)引起了人們的注意。這種電冰箱可以使食品迅速冷凍，延長保存期；并可以防止冷藏室的溫度過低而凍壞食品；還可以根據(jù)冰箱使用狀態(tài)，在適當時候進行除霜，以減小由于除霜而對食品產(chǎn)生的影響；尚可根據(jù)使用情況不免不必要的冷卻，以節(jié)約能源。
通過對直冷式電冰箱制冷系統(tǒng)的改進和采用模糊控制技術(shù)，實現(xiàn)了電冰箱的雙溫雙控，使電冰箱能根據(jù)使用條件的變化迅速合理地調(diào)節(jié)制冷量，且節(jié)能效果良好。
現(xiàn)從冰箱的硬件結(jié)構(gòu)框圖和模糊控制器兩個方面，以模糊控制算法為主線，將冰箱的溫度控制過程完全地描述了出來。具體分為硬件結(jié)構(gòu)框圖及各功能電路的介紹、模糊控制算法、軟件程序框圖等三部分。由于冰箱的溫度控制過程離不開對控制器的控制算法，因此本報告著重討論了溫度控制器的模糊控制算法，并舉出例子進行了詳細闡述。
關(guān)鍵字：模糊控制，溫度控制
ABSTRACT
   In recent years, with the penetration of computers in the social sphere, the successful development of fuzzy control refrigerator attracted people's attention. This refrigerator can make quick frozen foods to extend shelf life; and can prevent the freezer temperature is too low and nipped food; refrigerator can also be used according to the state, at an appropriate time to defrost, to reduce due to defrost while the impact of food; can still be bound under the unnecessary use of cooling in order to save energy.
Through the direct-cool refrigerator cooling system improvements and the adoption of fuzzy control technology to realize a dual-temperature refrigerator dual control, so that the use of refrigerators according to the conditions of a rapidly changing reasonably adjust cooling capacity, and energy-saving good effect.
Are from the refrigerator and fuzzy controller hardware block diagram of the two aspects of the fuzzy control algorithm as the main line, the temperature of the refrigerator control process described completely out. The specific hardware block diagram is divided into functional circuits and the introduction of fuzzy control algorithms, software programs such as block diagram of three parts. As the refrigerator temperature control process can not be separated on the controller of the control algorithm, this report focused on the temperature controller of the fuzzy control algorithm, citing examples described in detail.

Keywords: Fuzzy control, temperature control