PLC在電梯自動化控制中的應(yīng)用

電氣自動化論文編號:ZD068    字數(shù):22033,頁數(shù):61  

目 錄
第1章 緒論   1
1.1 引言   1
1.2 電梯的發(fā)展   1
第2章電梯設(shè)計的總體方案   3
2.1 硬件設(shè)計方案   3
2.2 軟件設(shè)計方案   3
第3章交流雙速電梯的原理及電氣線路  5
3.1 電梯原理介紹  5
3.2 電機主電路  7
3.3 電氣控制線路  8
第4章 PLC選型及I/O編號分配   10
4.1 四層四站雙速客梯控制系統(tǒng)PLC選型  10
4.1.1 常用PLC及其簡介   10
4.1.2 FX2系列可編程控制器   11
4.1.3 電梯系統(tǒng)PLC輸入輸出點的確定   16
4.2 PLC的I/O編號分配  16
第5章電梯控制系統(tǒng)  19
第6章系統(tǒng)程序設(shè)計  21
6.1 層樓繼電器電路的實現(xiàn)   21
6.2 指令和召喚回路   23
6.3 選向回路  27
6.4 選層回路   30
6.5 電梯的運行線路  32
6.6 電梯門的控制   38
第7章電梯故障分析  41
第8章 結(jié)論   42
參考文獻   43
致謝   45
附錄  46
附錄  56

摘 要
近年來，由于城市的發(fā)展，伴隨著建筑物向高層發(fā)展的進程，電梯作為一種縱向交通設(shè)備，已經(jīng)成為日常生活中不可缺少的必需品。電梯的種類多種多樣，按控制方式來分有信號控制電梯，集選控制電梯，下集選控制電梯等。
本設(shè)計主要完成了PLC在電梯自動化控制中的應(yīng)用，綜合經(jīng)濟性能及可靠性等幾大因素，在電梯控制系統(tǒng)中選擇了FX2系列PLC，它是三菱公司高性能小型機的代表作。由于電梯的運行是根據(jù)樓層和轎廂的呼叫信號、行程信號進行控制，而樓層和轎廂的呼叫是隨機的，因此，系統(tǒng)控制采用隨機邏輯控制，即在以順序邏輯控制實現(xiàn)電梯的基本控制要求的基礎(chǔ)上，根據(jù)隨機的輸入信號，以及電梯的相應(yīng)狀態(tài)，適時地控制電梯的運行。系統(tǒng)中PLC是控制系統(tǒng)的核心，電梯的各種信號送到PLC，然后又由PLC發(fā)出控制信號和指示信號給門控裝置和樓層顯示器去控制電梯的運行狀態(tài)，PLC根據(jù)輸入信號和呼叫信號對目前電梯所處的位置自動確定電梯的運行方向，到達目的層后，自動地平層、停車、開關(guān)門，在運行過程中顯示電梯的實際位置和運行方向，同時完成對呼叫信號的登記、保號、消號等工作；對電梯運行中的一些特殊情況，如急停、超載、沖頂、撞底等自動進行處理或報警。
本文在軟件方面主要完成了層樓繼電器回路、選向回路、選層回路、指令和召喚回路的設(shè)計。
 
關(guān)鍵詞：集選控制；隨機邏輯控制；順序邏輯控制

Abstract
    In recent years, as a result of the urban development, followed the building to the high-level development advancement, the elevator is taking one kind of longitudinal traffic facilities, already became in the daily life the essential essential item. Elevator's type are many and varied, comes the minute according to the control mode to have the signal control elevator, the collection elects to control the elevator, the last part chooses the control elevator and so on. this design has mainly completed PLC in the elevator automation control application, mixed economy performance and reliable and so on several big factors, has chosen FX2 in the lift control system series PLC, it is the Mitsubishi Corporation high performance small machine's representative works. Because elevator's movement is according to the floor and the sedan theater box calling signal, the traveling schedule signal carries on the control, but the floor and the sedan theater box's call is stochastic, therefore, the systems control uses the random logic control, namely, in realizes in elevator's basic control request foundation by the order logical control, According to the stochastic input signal, as well as elevator's corresponding condition, at the right moment controls elevator's movement. In the system PLC is control system's core, elevator's each kind of signal delivers PLC, then sends out the control signal and the pilot signal by PLC controls elevator's running status for the gating installment and the floor monitor, the PLC basis input signal and the calling signal the position which locates to the present elevator determines elevator's movement direction automatically, After arriving at the goal level, the automatic horizontal level, the parking, the switch gate, in the movement process demonstrated that elevator's physical location and the movement direction, simultaneously complete to the calling signal registration, number work and so on guarantee the number, to disappear; To elevator movement's some peculiar circumstances, like stops, the overload, to flush anxiously goes against, hits the bottom and so on to carry on processing or the warning automatically. This article mainly completed the level building relay return route in the software aspect, to elect to the return route, to choose the level return route, the instruction and summons return route's design.
Key word: The collection chooses the control; Random logic control; Order logical control