畢業(yè)論文新修正版-畢業(yè)設(shè)計說明書 plc 控制三相異步電動機(jī)正反轉(zhuǎn)設(shè)計-(文件)
【正文】 人員或控制系統(tǒng)告警，發(fā)出警報，或在重要應(yīng)用中接通備用電源。由于轉(zhuǎn)子導(dǎo)體兩端被短路環(huán)短接，在感應(yīng)電動勢的作用下，轉(zhuǎn)子導(dǎo)體中將產(chǎn)生與感應(yīng)電動勢方向基本一致的感生電流。 三相異步電動機(jī)的工作原理 圖 12 為三相異步電動機(jī)工作原理示意圖。 圖 12 三相異步電動機(jī)的定子 三相異步電動機(jī)轉(zhuǎn)子 轉(zhuǎn)子由轉(zhuǎn)子鐵心、轉(zhuǎn)子繞組、轉(zhuǎn)軸和風(fēng)扇等組成。圖 11 為三相異步電動機(jī)結(jié)構(gòu)示意圖。進(jìn)入 20 世紀(jì) 80 年代，由于計算機(jī)技術(shù)和微電子技術(shù)的迅猛發(fā)展，極大地推動了 PLC 的發(fā)展，使得 PLC 的功能日益增強(qiáng)，目前，在先進(jìn)國家中， PLC 已成為工業(yè)控制的標(biāo)準(zhǔn)設(shè)備，應(yīng)用面幾乎覆蓋了所有工業(yè)，企業(yè)。 關(guān)鍵詞 ： PLC 三相異步電動機(jī) 可編程控制 梯形圖 安徽工貿(mào)職業(yè)技術(shù)學(xué)院畢業(yè)設(shè)計（論文） II PLC control with a three wire asynchronous motor is inverting design Abstract This paper designed the threephase asynchronous motor PLC control circuit, is a threephase asynchronous motor positive inversion control, pared with the traditional relay control, with high speed, high reliability, flexibility and other advantages. Very practical. The threephase asynchronous motor is widely used, has the advantages of simple mechanism, high efficiency, easy control, reliable operation, easy to repair and low cost a little, almost covers the industrial and agricultural production and all aspects of human life, in these applications, threephase asynchronous motor running in different environments, so the fault occurrence is also very frequently, so a correct and reasonable use of it. This paper studies the system control is the use of PLC programming language ladder, ladder language is in the programmable controller in the most widely used language, because it is in the relay is added on the basis of the many functions, the use of flexible instruction, so that the logic relationship of a clear and intuitive, easy programming, readability is strong, the realization of the functions it considerably exceeds the traditional relay control circuit, the programmable controller is a digital electronic puting operating system, it is designed for use in harsh industrial application environment and design, it uses a programmable memory, used in the internal memory to perform logic operations, sequence control, timing, counting and arithmetic operations such as instruction, and the use of digital, analog input and output, the control of various mechanical or production process. Keyword： PLC Threephase asynchronous motor Programmable control Ladder 安徽工貿(mào)職業(yè)技術(shù)學(xué)院畢業(yè)設(shè)計（論文） III 目 錄 引 言 ............................................................................................................................................... 1 第 1 章 三相異步電動機(jī)基礎(chǔ) ............................................................................................................ 2 三相異步電動機(jī)的基本結(jié)構(gòu) .................................................................................................. 2 三相異步電動機(jī)定子 ................................................................................................... 2 三相異步電動機(jī)轉(zhuǎn)子 ................................................................................................... 2 三相異步電動機(jī)的工作原理 .................................................................................................. 3 三相異步電動機(jī)的正反轉(zhuǎn)工作過程 ....................................................................................... 3 三相異步電動機(jī)的原理 ............................................................................................... 3 三相異步電動機(jī)的制動 ............................................................................................... 4 第 2 章 PLC 基礎(chǔ)的知識 .................................................................................................................. 5 關(guān)于 PLC 的定義 .....
公司管理相關(guān)推薦
鄂ICP備17016276號-1