【正文】 frequency to bee may the full use resources. In this recent 10 years, the frequency conversion technology application has the very big development in our country, and obtained the good effect to be possible to say, the frequency conversion technology has accepted for the majority users, but had no alternative but to point out, our country in frequency conversion technology application aspect, with developed country level Shang You very big disparity. At present, the AC motors we are using now use frequency variation speed control only about 6%, but the developed country is 60%~70%, Japan on air blower, water pump frequency conversion velocity modulation use rate is 10%, but our country is less than %, In Japan airconditioner using frequency variation techniq。目前，應(yīng)用最多的還是工程整定法：如經(jīng)驗(yàn)法、衰減曲線法、臨界比例帶 法和反應(yīng)曲線法 。計(jì)算機(jī)在周期性地采樣并離散化后進(jìn)行 PID 運(yùn)算，算法如下： Mn=Kc*（ SPnPVn） +Kc*（ Ts/Ti） *（ SPnPVn） +Mx+Kc*（ Td/Ts） *（ PVn1PVn） （ ） 比例項(xiàng) Kc*（ SPnPVn）：能及時(shí)地產(chǎn)生與偏差（ SPnPVn）成正比的調(diào)節(jié)作用，比例系數(shù)Kc 越大，比例調(diào)節(jié)作用越強(qiáng)，系統(tǒng)的靜態(tài)穩(wěn)定精度越高，但 Kc 過大會(huì)使系統(tǒng)的輸出量振蕩加劇，穩(wěn)定性降低。例如，這會(huì)涉及到批量數(shù)據(jù)的處理、自動(dòng)傳送、甚至是運(yùn)動(dòng)路徑的智能組態(tài)問題。 在狀態(tài)圖監(jiān)控頁(yè)面的“地址”欄輸入需要監(jiān)控的操作數(shù)（信號(hào)）地址，并右擊相應(yīng)的單元格，進(jìn)行信號(hào)地質(zhì)的插入、刪除等操作。 STEP7Micro/WIN 對(duì)網(wǎng)絡(luò)有以下規(guī)定的格式要求。根據(jù) HMI 的產(chǎn)品等級(jí)不同，處理器可分別選用 8位、 16位、 32位的處理器。 （ 3）驅(qū)動(dòng)電路：驅(qū)動(dòng)主電路器件的電路。 變頻器 變頻器是把工頻電源 (50Hz 或 60Hz)變換成各種頻率的交流電源，以實(shí)現(xiàn)電機(jī)的變速運(yùn)行的設(shè)備。可用作負(fù)載電源。當(dāng) PLC投入運(yùn)行時(shí)，首先它以掃描的方式接收現(xiàn)場(chǎng)各輸入裝置的狀態(tài)和數(shù)據(jù)，并分別存入 I/O 映象區(qū)，然后從用戶程序存儲(chǔ)器中逐條讀取用戶程序，經(jīng)過命令解釋后按指令的規(guī)定執(zhí)行邏輯或算數(shù)運(yùn)算的結(jié)果送入 I/O 映象區(qū)或數(shù)據(jù)寄存器內(nèi)。此時(shí)的PLC 為微機(jī)技術(shù)和繼電器常規(guī)控制概念相結(jié) 合的產(chǎn)物。 轉(zhuǎn)差率 s—— 用來表示轉(zhuǎn)子轉(zhuǎn)速 n 與磁場(chǎng)轉(zhuǎn)速 n0相差的程度的物理量。 240 176。感應(yīng)電流又使導(dǎo)體受到一個(gè)電磁力的作用，于是導(dǎo)體就沿磁鐵的旋轉(zhuǎn)方向轉(zhuǎn)動(dòng)起來，這就是異步電動(dòng)機(jī)的基本原理。 therefore, threephase asynchronous motor has been widely used in all walks of life and daily life and other constantly updated production machinery and development of the motor rotation speed performance issues with increasingly high asynchronous motor threephase asynchronous motors because of its low cost, simple structure, high reliability and low maintenance, etc. in various industrial areas has been widely used, but its speed performance and rotation properties are not as DC motors, so how to improve the performance of asynchronous motor speed and rotation issues in order to improve the speed performance and the corner problem, it is especially important. This article through the squirrelcage induction motor work process analysis, focusing on the threephase asynchronous motor speed and angle performance, try a simple and effective method for speed and angle adjustment. Keywords： PLC， Threephase asynchronous motor， speed， turn angle 目錄 III 目 錄 第一章 緒論 .......................................................................................... 1 三相異步電動(dòng)機(jī) ........................................................................................... 1 三相異步電動(dòng)機(jī)的結(jié)構(gòu)與工作原理 .................................................. 1 PLC 技術(shù) ........................................................................................................ 7 的發(fā)展歷史 ................................................................................... 7 的基本結(jié)構(gòu) ................................................................................... 8 西門子 S7200 系列 PLC .................................................................... 9 變頻器 ......................................................................................................... 10 變頻器基本原理 ................................................................................ 11 變頻器調(diào)速基本原理 ........................................................................ 12 人機(jī)交互界面與西門 子 Smartline ............................................................. 13 人機(jī)交互界面 .................................................................................... 13 西門子 Smartline ............................................................................... 14 第二章 PLC 編程軟件與 HMI 組態(tài)軟件 ........................................... 15 STEP7Micro/WIN ...................................................................................... 15 軟件介紹 ............................................................................................ 15 程序組織 .......................................................................................... 15 程序編輯要點(diǎn) .................................................................................... 15 監(jiān)控 ............................................................................................. 15 wincc flexible 組態(tài)軟件 .............................................................................. 16 wincc flexible 簡(jiǎn)介 ............................................................................. 16 wincc flexible 的組件 ......................................................................... 17 第三章 電動(dòng)機(jī)轉(zhuǎn)速控制 .................................................................................. 18 系 統(tǒng)設(shè)計(jì)的總體思路 .................................................................................. 18 變頻器參數(shù)設(shè)置 .......................................................................................... 18 轉(zhuǎn)速控制外部硬件連接圖 .......................................................................... 19 PLC 程序設(shè)計(jì) .............................................................................................. 19 PID 算法 .............................................................................................. 19 2020 屆本科畢業(yè)設(shè)計(jì)論文 IV 內(nèi)存變量分配表 ................................................................................. 20 速度反饋設(shè)計(jì) ..................................................................................... 21 調(diào)試與數(shù)據(jù)分析 .......................................................................................... 21 PID 參數(shù)整定 ...................................................................................... 21 運(yùn)行結(jié)果 ............................................................................................. 22 第四章 電機(jī)轉(zhuǎn)角控制 ...........