摘 要
恒溫控制在加工業(yè)領(lǐng)域普遍存在。隨著加工業(yè)的發(fā)展，恒溫控制系統(tǒng)所應(yīng)用的環(huán)境越來(lái)越復(fù)雜和多樣化，對(duì)控制的精度等需求也越來(lái)越高，而且溫控系統(tǒng)的非線性和滯后性也一直沒(méi)有得到很好的解決。傳統(tǒng)的控制算法和傳統(tǒng)的控制器已經(jīng)無(wú)法滿(mǎn)足眾多變化的需要，智能控制方法和高性能的控制器開(kāi)始得到關(guān)注。在此背景下，本課題研究并設(shè)計(jì)了氟碳噴涂烘道恒溫控制系統(tǒng)。本課題主要分為系統(tǒng)設(shè)計(jì)分析、仿真驗(yàn)證和系統(tǒng)軟硬件設(shè)計(jì)幾個(gè)部分。
在系統(tǒng)分析設(shè)計(jì)中，首先通過(guò)了解氟碳噴涂工藝，在廠家實(shí)測(cè)數(shù)據(jù)，借助matlab系統(tǒng)辨識(shí)工具箱建立了被控對(duì)象的數(shù)學(xué)模型，之后又通過(guò)深入學(xué)習(xí)直接數(shù)字控制系統(tǒng)、傳統(tǒng)PID控制算法和神經(jīng)網(wǎng)絡(luò)理論，分析研究了增量式PID、基于徑向基函數(shù)（RBF）的自適應(yīng)PID以及基于徑向基函數(shù)（RBF）與史密斯（Smith）預(yù)估補(bǔ)償?shù)闹悄躊ID控制算法的氟碳噴涂烘道溫度閉環(huán)調(diào)控系統(tǒng)；在仿真驗(yàn)證中，借助MATLAB的系統(tǒng)辨識(shí)工具箱建立了被控對(duì)象的數(shù)學(xué)模型，并在SIMULINK仿真平臺(tái)中分別搭建了以上三種控制算法的氟碳噴涂烘道恒溫控制系統(tǒng)仿真模型，并對(duì)各個(gè)系統(tǒng)設(shè)計(jì)進(jìn)行了仿真驗(yàn)證，其中包括S-函數(shù)編寫(xiě)擴(kuò)展的仿真模塊。仿真結(jié)果表明基于徑向基函數(shù)與史密斯預(yù)估補(bǔ)償?shù)闹悄躊ID控制算法的控制效果優(yōu)于另外兩種算法的控制效果，之后又在基于徑向基函數(shù)與史密斯預(yù)估補(bǔ)償?shù)闹悄躊ID控制系統(tǒng)理論仿真模型中加入與實(shí)際工作環(huán)境相對(duì)應(yīng)的噪聲進(jìn)行仿真，發(fā)現(xiàn)控制結(jié)果滿(mǎn)足系統(tǒng)性能指標(biāo)，最終將該智能PID確定為設(shè)計(jì)中所采用的控制算法；在計(jì)算機(jī)仿真通過(guò)之后，本課題以TI公司的TMS320F2812DSP為主控制芯片，完成了氟碳噴涂烘道恒溫調(diào)控系統(tǒng)硬件部分設(shè)計(jì)；其中硬件部分包括DSP外圍電路、鍵盤(pán)電路、顯示電路、溫度給定電路、實(shí)時(shí)溫度檢測(cè)電路、D/A電路、保護(hù)電路。系統(tǒng)軟件設(shè)計(jì)，以ccs3.3為開(kāi)發(fā)環(huán)境，完成了氟碳噴涂烘道恒溫控制系統(tǒng)工程設(shè)計(jì)，其中源程序部分包括主程序模塊、采樣中斷模塊、PID調(diào)控輸出模塊、初始化模塊，鍵盤(pán)模塊、顯示模塊、D/A模塊、保護(hù)模塊以及報(bào)警模塊設(shè)計(jì)。
最后，對(duì)系統(tǒng)進(jìn)行了實(shí)驗(yàn)研究，給出了實(shí)驗(yàn)結(jié)果，證明設(shè)計(jì)的控制系統(tǒng)實(shí)現(xiàn)了確定的±2℃性能指標(biāo)，并對(duì)系統(tǒng)實(shí)際運(yùn)行結(jié)果中誤差進(jìn)行了分析。

關(guān)鍵詞： 氟碳噴涂；徑向基函數(shù)（RBF）；史密斯（Smith）；PID；DSP；恒溫控制











Abstract
Temperature control in processing field is commonly existing. Along with the development of industry, constant temperature control system is applied by more and more complex or diverse environment, the control precision demand is higher and higher, and the temperature control system of the nonlinearity and hysteresis also has not been solved well. Traditional control algorithm and the traditional controller has failed to meet the needs of many changes, the intelligent control method and high-performance controller starts to be got attention. In this background, the constant temperature control system about a fluorine carbon spraying bake is designed and researched in this topic . This topic includes system analysis and design、simulation and validation、system hardware and software design parts.
In the analysis and design part of system, firstly, by understanding fluorine carbon spraying process, the measured data in the factory, established the mathematical model of the controlled object with the aid of the matlab system identification toolbox;secondly, through study DDC、traditional PID control algorithm and the neural network theory deeply, the intelligent PID control algorthm based on RBF neural network and Smith guesstimation compensation used in bake temperature closed loop control system was analyzed; In the simulation and validation part, with the identification system toolbox of MATLAB established the mathematical model of the controlled object, in simulink7.1 simulation platform built the bake constant temperature control system simulation model for system, including S - function write extended simulation module.Simulation results show that based on RBF neural network and Smith guesstimation compensation of intelligent PID control algorithm is control effect and robustness to the traditional PID control algorithm; In the hardware part, takes the TMS320F2812DSP TI company as mainly control chip, finishes the fluorine carbon spraying bake temperature control system hardware design, this part includes DSP buffer circuit, keyboard circuit, display circuit, syetem given circuit, realtime temperature detecting detection circuit, D/A circuit, protect circuit; In the software part, used ccs3.3 as the development environment,finished the control project design,this source program includes main program module, Sampling interrupt module,initialization module, the keyboard module, display modules,protcet module and alarm module.
Finally, the system was studied, the experimental result was gave, and the result were ideal and reached the performance index of the control system,at the same time, the error of the system in the action work was analyzed.

Keywords: fluorine carbon spraying, RBF; Smith, PID; DSP；const temperature control



目 錄
摘 要 I
Abstract III
第1章 緒論 1
1.1 課題的理論意義和實(shí)用價(jià)值 1
1.2 本課題國(guó)內(nèi)、外研究現(xiàn)狀與發(fā)展趨勢(shì) 3
1.2.1 國(guó)內(nèi)現(xiàn)狀 3
1.2.2 國(guó)外現(xiàn)狀 4
1.2.3 發(fā)展趨勢(shì) 4
1.3 課題的研究?jī)?nèi)容與研究方法 5
第2章 氟碳噴涂烘道恒溫控制系統(tǒng)簡(jiǎn)介 6
2.1 氟..