【正文】 數(shù)據(jù)處理模塊..................................................................................................................................................24 數(shù)字濾波...............................................................................................................................................24 顯示處理...............................................................................................................................................26 軟件抗干擾措施............................................................................................................................................26第四章 系統(tǒng)控制方案............................................................................................................................................27 PID控制..............................................................................................................................................................27 PID控制的發(fā)展...............................................................................................................................27 PID控制理論.....................................................................................................................................27 PID控制算法.....................................................................................................................................28 溫控箱數(shù)學(xué)模型的確定...........................................................................................................................29 溫控箱特性分析..............................................................................................................................31 溫控箱數(shù)學(xué)模型的辨識.............................................................................................................31 PID控制參數(shù)整定........................................................................................................................................33 MATLAB仿真......................................................................................................................................................33第五章 結(jié)論...................................................................................................................................................................35 總結(jié).........................................................................................................................................................................35 展望.........................................................................................................................................................................35參考文獻...........................................................................................................................................................................37致謝.......................................................................................................................................................................................38附錄A...................................................................................................................................................................................39附錄B...................................................................................................................................................................................42附錄C...................................................................................................................................................................................43附錄D...................................................................................................................................................................................45河南城建學(xué)院本科畢業(yè)設(shè)計（論文） 插圖清單插圖清單 硬件總體結(jié)構(gòu)框圖....................................................................................................................................7 AT89C52單片機DIP封裝的引腳....................................................................................................9 復(fù)位電路和時鐘電路...............................................................................................................................9 鉑電阻溫度傳感器采樣電路.............................................................................................................10 AD7705引腳圖...............................................................................................................................................13 A/D轉(zhuǎn)換電路................................................................................................................................................14 相位控制調(diào)功電壓波形........................................................................................................................14 通斷控制調(diào)功電壓波形........................................................................................................................15 交流SSR工作原理框圖........................................................................................................................16 可控硅輸出電路......................................................................................................................................17 鍵盤電路.......................................................................................................................................................18 顯示電路.......................................................................................................................................................19 保護電路.......................................................................................................................................................19 前后臺系統(tǒng)....................................................................................................................................................22 主程序流程圖..............................................................................................................................................23 數(shù)據(jù)采集模