毕业设计（论文）函授站西工院09级专业机电一体化姓名王乔毕业论文目录目录...............................................................II摘要...............................................................1第一章绪论........................................................21.1课题的研究背景及意义.........................................21.2PLC在电梯控制中的应用以及发展前景...........................3第二章电梯的综述..................................................52.1电梯的定义与简介.............................................52.2电梯的种类...................................................52.3电梯的主要参数及性能指标.....................................62.4电梯的结构及组成部件.........................................72.5电梯的工作流程..............................................102.5.1电梯的升降流程图......................................112.5.2电梯的开关门流程图....................................12第三章硬件的选型..................................................133.1PLC的选择..................................................133.1.1PLC的定义和特点......................................133.1.2PLC的主要功能和应用..................................163.2变频器的选择...............................................173.2.1通用变频器概况........................................173.2.2通用变频器的功率输出驱动技术动向......................183.2.3三菱FR-A740变频器参数................................193.3制动器.....................................................213.4安全钳与限速器.............................................223.4.1安全钳的作用与组成....................................223.4.2限速器的作用..........................................22第四章硬件设计及计算..............................................234.1四层电梯曳引电机及门电机电路...............................234.2PLC的系统硬件设计..........................................234.3可编程控制器机型的选择......................................244.3.1PLC的I/O点数估算.....................................244.3.2内存估算..............................................254.3.3输入输出模块的选择....................................264.3.4三菱FX2N-48MR-001的性能指标..........................264.4变频器参数设置及计算.......................................274.4.1变频器参数设置........................................274.4.2变频器容量计算........................................27第五章软件设计.....................................................295.1PLC的编程语言..............................................295.1.1输入/输出点分配：.....................................29II毕业论文5.1.2PLC外部接线图........................................315.2程序设计....................................................325.2.1外部信号输入存储程序..................................325.2.2轿厢停于某层时，所在楼层存于D0并用数码管显示程序.....355.2.3比较判断轿厢上下行程序................................365.2.4补充程序..............................................385.2.5开关门程序............................................395.2.6轿厢上行与下行程序....................................42第六章系统程序调试.................................................446.1程序调试...................................................446.2程序运行过程中出现的问题及调试.............................446.3程序最终运行情况...........................................466.4PLC控制系统的外部干扰....
