《毕业设计(论文)－西门子五层电梯plc控制》

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1、目录前言…………………………………………………………………………………….1第一章PLC的简介........................................................................................21.1PLC的概念…………………………………………………………31.2PLC的发展阶段……………………………………………………41.3PLC的组成及工作原理……………………………………………51.4PLC的特点及功能…………………………………………………91.5PLC的编程语言……………………………………………………10

2、1.6西门子S7-200的简介……………………………………………11第二章电梯的概述............................................112.1电梯的起源与发展…………………………………………………112.2电梯的定义…………………………………………………………122.3电梯的分类…………………………………………………………122.4电梯的主要机械部件………………………………………………14第三章电梯的电力驱动系统………………………………………………153.1电梯电力驱动系统的定义及构成..........................163.2电

3、梯电力驱动系统的要求................................163.3交流感应电动机的转速调节及其评价......................173.4交流调速电梯的运行工艺过程............................173.5交流双速电梯的主驱动系统..............................183.6三相交流双速异步电动机的拽引系统......................19第四章硬件设计…………………………………………………………….4.1控制要求分析4.2PLC系统控制I/O点分配与计算4.3PLC型号选择第五章软件

4、设计5．1开关轿厢门程序5.2自动选向程序5.3轿厢内呼和楼层外呼程序5.4PLC电梯控制梯形图Opinionsandsuggestionsontheparty'smasslineeducationalpracticeAccordingtothecentralandprovincial,municipalunifieddeployment,accordingtomunicipalPartycommittee"aboutcarryingouttheparty'smasslineeducationalpracticeactivityinthecity'simplementationopini

5、ons,thespiritoftheparty'smasslineeducationalpracticeactivitiesfrom20**inJanuaryto99months,carriedoutatalllevelsofdepartmentsanddirectlyaffiliatedinstitutionsandgrass-rootspartyorganizations.AccordingtomyactualCounty,thecountytocarryouttheeducationpracticeputforwardthefollowingimplementationopinio

6、ns.First,theoverallrequirementsCountycountyeducationpracticetotheeighteenPartyofeight,thespiritofthethethirdPlenarySessionofthe18thCPCCentralCommitteeastheguidance,conscientiouslyimplementthespiritofgeneralsecretaryXiJinpingbookseriesofimportantspeech,earnestlyimplementtheCentralCommitteereally,o

7、pinionsandadvice><<>,