基于PLC的流量控制 毕业设计(论文).docx

毕业设计(论文)报告题目基于 PLC 的流量控制系别中德机电学院专业电气自动化技术班级 0901 学生姓名学号 100091635 指导教师****** 基于 PLC 的流量控制摘要: 本设计采用 S7-200PLC 为核心对液体流量进行控制。随着自动控制技术的迅速发展, PLC 对流量的控制技术应用越来越广泛。本文采用 PLC 对流量进行控制,通过合理的设计,提高流量控制水平,进而改善流量运行的稳定性,使其更加精确。本文主 1 要介绍了流量的 PLC 控制系统总体方案设计、设计过程、组成、列出流量的梯形图, 并给出了系统组成框图,分析流量逻辑关系,提出 PLC 的编程方法。能够给一些初学者点建议,能够对流量的基本原理、基本编程思路有大致的了解。关键词: 流量, PLC ,控制 PLC based flow control Abstract : This design uses the S7-200PLC as the core of the liquid flow control. With the rapid development of automatic control technology, PLC flow control technology is applied more and more widely. This paper used PLC to flow control, through reasonable design, 2 improve the flow of control level, thereby improving the flow stability of running, making them more precise. This article mainly introduced the flow of PLC control system design, design process, composition, lists the flow ladder diagram, and gives the block diagram of the system, analyzes the flow of logic relation, put forward PLC programming method. Can give some suggestions to beginners, basic principle, basic flow programming ideas have roughly understanding. Keywords: flow, PLC, control 目录第一章课题的提出................................................................................................................... 4 选题背景....................................................................................................................... 4 方案论证....................................................................................................................... 4 3 第二章系统的理论分析及控制方案确定............................................................................... 5 控制方案的比较和确定................................................................................................ 5 流量控制系统的组成及原理图................................................................................... 5 水流量系统控制流程.................................................................................................... 7 第三章系统的硬件设计..................................