【正文】
廣泛的應(yīng)用。以傳統(tǒng)的單片機(jī)為核心的溫度控制系統(tǒng),由于受到處理器自身硬件資源和速度的限制,硬件電路設(shè)計(jì)復(fù)雜,數(shù)據(jù)實(shí)時(shí)處理能力差,溫度調(diào)節(jié)時(shí)間長(zhǎng)。 關(guān)鍵詞 :溫度控制 ,PLC,模糊控制 ,PID參數(shù)整定 ,組態(tài)王 II Study of selftuning PID controller in Temperature Control System Based on PLC ABSTRACT Temperature is the most universal and important industrial parameter in all kinds of technical produce and scientific experiment. The manipulative precision of temperature will take a great effect on production or experimental result. The mode of temperature control is various. The programmable logic controller (PLC) is Reliable not easily to be jamming and easily to be learned and used , weled by workers and widely used in industry. The thesis analyzes the control strategy currently used, in order to find out the Shortages about traditional PID control. Considering the bad Performance of the Sintering Process brought by fixed PID Parameters, a fuzzy control method is developed to enhance PID control, in which fuzzy inference is used to modify PID control Parameters . Based on the requirements of sintering fumace and control performance, some key issues, such as framework of fuzzy PID control, based on this PLC implementation with control system of the function of selftuning PID temperature, the methods of adjustment of the fuzzy rules and the parameters, are presented in the thesis to provide the plete temperature control of sintering furnace. The programs of PLC are developed to realize the industrial implements. We have designed Human Machine Interface( HMI) with the Kingview configuration soft which is developed by domestic pany . The Kingview can monitor and control the PLC on line. We also have designed several menu, including the historical curve screen and monitoring screen. Users can easily query the operation of PLC, data acquisition and online control. Finally the procedures of the temperature control system based on the selftuning PID controller is designed and implemented. Key Words: Temperature control, PLC, FuzzyPID Control , PID parameter tuning, Kingview 1 1 緒論 課題的背景和意義 隨著控制理論的不斷發(fā)展,各項(xiàng)控制場(chǎng)合諸如溫度、壓力及流量等參數(shù)的控制及測(cè)量都得到了長(zhǎng)足的發(fā)展。組態(tài)項(xiàng)目中制作了曲線畫面和監(jiān)控畫面,用戶可方便地查詢 PLC的運(yùn)行情況、數(shù)據(jù)采集和在線控制 。 人機(jī)界面采用的是國(guó)內(nèi)的一個(gè)比較流行的組態(tài)王軟件。 本文首先分析了目前溫度的控制方法,找出傳統(tǒng) PID控制的不足 ,針對(duì) PID固定參數(shù)在非線性環(huán)境下難以保證系統(tǒng)性能的缺陷,提出采用模糊策略增強(qiáng) PID控制在非線性系統(tǒng)中的有效性,即采用模糊推理的方式自整定 PID控制參數(shù) ,基于對(duì)溫度的結(jié)構(gòu)特點(diǎn)和控制性能要求,論文提出了模糊 PID控制的基本框架和模糊規(guī)則、論域等相關(guān)參數(shù)的整定方法,設(shè)計(jì)了模糊 PID溫度控制器的控制策略 , 在此基礎(chǔ)上以西門子 S7200 PLC為處理器實(shí)現(xiàn)了具有自整定功能的 PID溫度控制系統(tǒng)。溫度控制的精度對(duì)產(chǎn)品或?qū)嶒?yàn)結(jié)果會(huì)產(chǎn)生重大的影響。 27 致謝 23 組態(tài)界面設(shè)計(jì) ................................................................................................................. 24 組態(tài)測(cè)試 ...................................................................................................................... 25 曲線分析 ...................................................................................................................... 25 6 總結(jié)與展望 23 組態(tài)功能設(shè)計(jì) 21 5 組態(tài)軟件設(shè)計(jì)以及系統(tǒng)分析 20 參數(shù)可調(diào)的 PID 運(yùn)算程序 16 模糊 PID 控制的 PLC 實(shí)現(xiàn) .......................................................................................... 17 4 程序設(shè)計(jì)流程 16 實(shí)驗(yàn)配置和軟件環(huán)境 9 模糊 PID 參數(shù)自整定原理 ............................................................................................. 10 模糊 PID 參數(shù)自整定設(shè)計(jì) .............................................................................................11 4 模糊 PID 參數(shù)自整定控制的 PLC 實(shí)現(xiàn) 7 3 基于模糊控制的 PID 參數(shù)整定 4 PID 控制原理 ................................................................................................................... 4 PID 三個(gè)參數(shù)的調(diào)節(jié)作用 .............................................................................................. 5 PID 參數(shù)整定算法的溫度控制系統(tǒng)研究 ...................................................................... 6 PID 參數(shù)整定的概念 1 課題的背景和意義 ........................................................................................................... 1 PID 參數(shù)整定方法的發(fā)展 現(xiàn)狀 ....................................................................................... 1 模糊控制發(fā)展現(xiàn)狀 ........................................................................................................... 2 溫度控制系統(tǒng)的發(fā)展現(xiàn)狀 ............................................................................................... 2 論文的主要內(nèi)容及組織結(jié)構(gòu) ........................................................................................... 3 2 PID 控制 II 1 緒論 I Abstract 學(xué)生簽名: 年 月 日 福建工程學(xué)院本科畢業(yè)設(shè)計(jì) (論文 )指導(dǎo)教師承諾保證書 本人鄭重承諾:我已按有關(guān)規(guī)定對(duì)本篇畢業(yè)設(shè)計(jì) (論文 )的選題與內(nèi)容進(jìn)行了指導(dǎo)和審核,該同學(xué)的畢業(yè)設(shè)計(jì)(論文)中未發(fā)現(xiàn)弄虛作假、抄襲的現(xiàn)象,本人愿承擔(dān)指導(dǎo)教師的相關(guān)責(zé)任。 畢業(yè)設(shè)計(jì)(論文) 題 目: 基于 PLC的 自整定 PID溫度控制設(shè)計(jì) 學(xué) 生: 指導(dǎo)老師: 許思猛 系 別: 電子信息與電氣工程系 專 業(yè): 電氣工程及其自動(dòng)化 班 級(jí): 電氣 0702 學(xué) 號(hào): 0207103217 2020年 6月 2 福建工程學(xué)院本科畢業(yè)設(shè)計(jì) (論文 )作者承諾保證書 本人鄭重承諾: 本篇畢業(yè)設(shè)計(jì) (論文 )的內(nèi)容真實(shí)、可靠。如果存在弄虛作假、抄襲的情況,本人愿承擔(dān)全部責(zé)任。 指導(dǎo)教師簽名: 年 月 日 3 目 錄 摘 要 6 PID 控制器參數(shù)對(duì)控制性能的影響