基于plc的電梯控制系統(tǒng)的設(shè)計(jì)定稿-全文預(yù)覽
【正文】 作，一次循環(huán)可分為 5 個(gè)階段，如右圖所示。 輸出三種形式：繼電 器 低速大功率 可控硅 高速大功率 晶體管 高速小功率 各種接口、高功能模塊：便于擴(kuò)展。 (3) 把結(jié)果送到輸出端?？沙淌竭壿嬁刂破骷捌溆嘘P(guān)外部設(shè)備，都按易于與工業(yè)控制系統(tǒng)聯(lián)成一個(gè)整體，易于擴(kuò)充其功能的原則設(shè)計(jì) 。 3) 電梯運(yùn)行后狀態(tài) ： 在到達(dá)指定樓層后，電梯會(huì)繼續(xù)待命，直至新命令產(chǎn)生。 三層樓電梯中，一層只有上呼叫按鈕三層只有下呼叫按鈕，二層都同時(shí)具有上呼叫和下呼叫按鈕。而且，在電梯內(nèi)部也應(yīng)有控制電梯開(kāi)門(mén)、關(guān)門(mén)的按鈕，使乘客可以在電梯停下時(shí)隨時(shí)地控制電梯的開(kāi)門(mén)與關(guān)門(mén)。安全裝置保證電梯運(yùn)行安全。轎廂是運(yùn)載乘客或其他載荷的箱體部件，對(duì)重用來(lái)平衡轎廂載荷、減少電動(dòng)機(jī)功率。 由限速器，安全鉗，緩沖器，安全觸板，層門(mén)門(mén)鎖，安全窗，限位開(kāi)關(guān)，裝置組 成。 電力拖動(dòng)系統(tǒng)由曳引電動(dòng)機(jī)，供電系統(tǒng)，速度反饋裝置，電動(dòng)機(jī)調(diào)速裝置等組成。 門(mén)系統(tǒng)由轎廂門(mén)，層門(mén)，開(kāi)門(mén)機(jī)，門(mén)鎖裝置組成。 導(dǎo)向系統(tǒng)主要由導(dǎo)軌，導(dǎo)靴和導(dǎo)軌架組成。 關(guān)鍵詞： 三 層；電梯； PLC Abstract： PLC (Programmable Logical Controller) took one kind most important, the application situation most industries control microputer, it is convenient, operation simple in particular by its programming merit and so on redundant reliability, obtained the widespread application in the industrial production process. It applies the large scale integrated circuit, the miniature machine technology and the munication technology development achievement, gradually formed had the many kinds of merits and miniature, medium, largescale, ultra largescale and so on each kind of specification series product, applied to monitors between the puter from the control system many controls domain. Along with society’s unceasing development, the building is more and more high, but the elevator became the high level building to have the equipment. After humanity’s more than centuries unremitting endeavors, the elevator already from the handle switch operation elevator, the pushbutton control elevator develops to the present group control elevator, has made the indelible contribution for the high level transportation. PLC in the control in the elevator the application mainly to manifest in its logical switch control function. This function enable PLC to have the logic operation, counts with fixed time as well as the data feeds output funct
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