基于plc实验控制系统的设计毕业论文.doc

基于PLC的实验控制系统的设计 PAGE II 基于PLC的实验控制系统的设计 [摘 要]本课题是基于PLC的实验控制系统的设计。以机械手、运料小车和电梯控制系统为例，着重进行了可编程逻辑控制器和组态软件的仿真系统的软件设计，通过PLC设备与上位机和变频器的连接，将组态软件应用于PLC的实践过程中，上位机和变频器均可接收PLC发出的控制信号，并按照PLC程序以动画形式在计算机屏幕上反映出PLC的控制过程及结果，实现PLC对被控项目的编程控制、速度控制及调试，并可根据组态仿真的结果不断修正自己的程序。 [关键词]控制系统；可编程序逻辑控制器；组态软件；编程；仿真调试 Design of Experimental Control System Based on PLC Abstract: This topic is the design of experimental control system based on PLC, which take mechanical hand, transport carriage and elevator for example and focused on the software design of programmable logic controller and configuration software on simulation system. Through connecting with the PLC and inverter, configuration software will be applied to the practice of PLC. In the design, PC and PLC may receive the control signal sended out by inverter and reflect the control process, and results of PLC in animation form on the computer screen according to the PLC program. Eventually, the subject can achieve the purpose of the control of programmable, speed control and debugging. At the same time, the subject can revise the program constantly according the results simulation. Key words: Control system; programmable logic controller; configuration software; programming; simulation debugging 目 录 TOC \o 1-3 \u 1引言 PAGEREF _Toc261716291 \h 1 1.1 课题的意义、目的 PAGEREF _Toc261716292 \h 1 1.2 课题相关技术 PAGEREF _Toc261716293 \h 1 2 控制系统的总体设计方案 PAGEREF _Toc261716294 \h 2 2.1 控制系统的组成 PAGEREF _Toc261716295 \h 2 2.2 PLC与上位机及变频器的通讯 PAGEREF _Toc261716296 \h 2 2.3 系统的基本控制要求 PAGEREF _Toc261716297 \h 3 3 控制系统的硬件设计 PAGEREF _Toc261716298 \h 5 3.1 控制系统的设计 PAGEREF _Toc261716299 \h 5 3.2 PLC的选型 PAGEREF _Toc261716300 \h 5 3.1.1 PLC的机型的选择 PAGEREF _Toc261716301 \h 5 3.1.2 输入／输出端口分配 PAGEREF _Toc261716302 \h 6 3.1.3 PLC硬件接线 PAGEREF _Toc261716303 \h 7 3.3 变频器的选型 PAGEREF _Toc261716304 \h 8 4 控制系统软件设计 PAGEREF _Toc261716305 \h 9 4.1 组态软件 PAGEREF _Toc261716306 \h 9 4.1.1 “组态王”的特点 PAGEREF _Toc261716307 \h 9 4.1.2 建立应用工程的一般过程 PAGEREF _Toc261716308 \h 10