【正文】 oop speed regulation system. Application of PLC PID mands to realize dc motor speed closedloop control. This system is easy to expand, easy to expand all kinds of I/O modules and function modules. Keywords PLC； Direct current machine； Double closedloop； Controls 蘇州科技學(xué)院 天平學(xué)院 本科生畢業(yè)設(shè)計(jì)（論文） III 目 錄 第 1 章 緒論 .................................................................................................................... 1 直流電動(dòng)機(jī)簡(jiǎn)介 ................................................................................................... 1 雙閉環(huán)調(diào)速系統(tǒng) ................................................................................................... 1 PLC 在電機(jī)調(diào)速中的應(yīng)用 .................................................................................... 2 第 2 章 系統(tǒng)總體設(shè)計(jì)及算法模型確定 ............................................................................. 4 系統(tǒng)總體設(shè)計(jì) ...................................................................................................... 4 雙閉環(huán)調(diào)速系統(tǒng)常用控制方法介紹 ....................................................................... 5 控制方法的確定 ................................................................................................... 6 PID 控制的結(jié)構(gòu) ........................................................................................ 7 PID 參數(shù)的調(diào)整 ........................................................................................ 9 PID 模塊 ................................................................................................... 9 系統(tǒng)參數(shù)計(jì)算 ..................................................................................................... 11 主電路參數(shù)計(jì)算 ....................................................................................... 11 電流環(huán)節(jié)（ ACR）的設(shè)計(jì) ......................................................................... 11 轉(zhuǎn)速環(huán)（ ASR）的設(shè)計(jì) .............................................................................13 按轉(zhuǎn)速環(huán) (ASR)退飽和重新計(jì)算超調(diào)量 .....................................................14 第 3 章 硬件設(shè)計(jì) ............................................................................................................16 系統(tǒng)總體結(jié)構(gòu) .....................................................................................................16 CPU 主機(jī)部分 ..........................................................................................16 電機(jī)驅(qū)動(dòng)部分 ..........................................................................................16 檢測(cè)部分 ............................................................................................................17 電流檢測(cè)部分 ..........................................................................................17 速度檢測(cè)部分 ..........................................................................................18 數(shù)據(jù)采集模塊 .....................................................................................................19 PLC 輸入 /輸出端口 ..................................................................................20 用于 PLC 的輸入 /輸出模塊 .......................................................................22 采集時(shí)序控制電路 ...................................................................................23 正交采用 .................................................................................................23 模塊量混合模塊 EM235............................................................................24 蘇州科技學(xué)院 天平學(xué)院 本科生畢業(yè)設(shè)計(jì)（論文） IV 晶閘管 —電動(dòng)機(jī)電路設(shè)計(jì) ....................................................................................24 整流變壓器的設(shè)計(jì) ...................................................................................24 晶閘管的保護(hù) ..........................................................................................24 晶體管驅(qū)動(dòng)、觸發(fā)電路的設(shè)計(jì) .............................................................................25 驅(qū)動(dòng)電路原理 ..........................................................................................25 觸發(fā)電路原理 ..........................................................................................26 穩(wěn)壓電源 ............................................................................................................26 第 4 章 軟件設(shè)計(jì) ............................................................................................................27 系統(tǒng)程序設(shè)計(jì)方案 ..............................................................................................27 主程序設(shè)計(jì) .........................................................................................................27 速度初始化子程序 ..............................................................................................28 轉(zhuǎn)速檢測(cè)子程序 ..................................................................................................30 電流檢測(cè)子程序 ..................................................................................................30 PID 控制子程序 ..................................................................................................31 電流環(huán)及轉(zhuǎn)速換子程序 .......................................................................................32 結(jié) 論 ............................................................................................................................34 致 謝 ............................................................................................................................36 參 考 文 獻(xiàn) ...................................................................................................................37 附錄 A 譯文 .................................................................................................................38 基于 PLC 直流電動(dòng)機(jī)雙閉環(huán)調(diào)速系統(tǒng) ......................................................................38 附錄 B 外文 原文 ...........................................................................................................52 附錄 C 程序清單 ...........................................................................................................70