文档介绍：吉林化工学院毕业设计说明书
基于PLC的全自动包装机系统设计
The Design of Automatic Packaging Machine Control System
Based on PLC
学生学号:
学生姓名:
专业班级: 自动
指导教师:
职称: 教授
起止日期: ~
吉林化工学院
Jilin Institute of Chemical Technology
摘要
全自动包装机系统生产工艺及主要设备,建立在机械电气特性的基础上,对在控制系统设计中如何充分利用现代控制技术、网络技术、现场总线技术、计算机技术等。全自动包装机控制系统达到进行了较深入的研究。论文充分考虑了成本、维护可靠性和先进性等诸多因素,提出了基于全自动包装机控制系统的实现方案,设计出全自动包装机控制系统的构成。
自动控制系统设置3个现场PLC 监控站和1个中心操作站。下位机系统采用PLC,上位机系统采用PC 或IPC(工业PC 机)。考虑到全自动包装机控制对系统安全性、可靠性、可维护性和灵活性的要求,本系统现场控制站选择西门子公司S7-300 系列的模块结构PLC,上位机选择工控机IPC。下位机编程采用STEP-7 软件包进行PLC 软件设计。
建立高度全自动包装机控制系统,不仅可以加强整个系统的可靠性、准确性,还可以减少劳动强度,降低处理成本和节约能源。全自动包装机控制系统的建设将降低生产和维护成本,减轻生产及维护工人的劳动强度,并为生产工艺的进一步改进提供方便,具有很好的经济效益和社会效益。
关键词:全自动包装机,可编程控制器,硬件组态
Abstract
With the rapid development of the automatic control theory, industrial works, works works’ technology, in modern industrial occasion for the realization of people-oriented work ethic, reducing the intensity of work, i increasing work efficiency, production line of automatic control system which must have high reliability and flexibility has e an important part of the study in the development of the control industry.
The system uses Siemens S7-300 PLC programming software STEP7 to conduct the reasonable control procedures design, in order to be able to vividly reflect the actual operating and controlling process, making control scheme flexible and operating simply achieving the whole control process of alcohol distillation section.
Combined with the process of alcohol distillation section and based on the function analysis towards PLC, in the case that taking full account of the cost, maintaining reliability and many other factors ,this design plishes many important functions such as analog input range conversion, analog volume output range conversion, the edit of digital manual program and main program, and so on, thus it improves the system’s real-time, anti-interference and maneuverability, meets the actual needs in industrial process, achieves