"基于西门子S7200 PLC的自动轧钢机系统设计与控制论文"

本论文是基于西门子S7-200系列PLC结构的自动轧钢机系统。论文从自动轧钢机的来源和发展、国内发展现状开始，对自动轧钢机的方案进行了论证。接着介绍了PLC的基本组成、特点和工作原理，并对基于西门子S7-200系列PLC构成的自动轧钢机系统进行了整体设计。 在论文中，详细介绍了自动轧钢机的各个硬件组成，并完成了PLC的外部接线图。在PLC梯形图的编写方面，采用了西门子PLC梯形图专业编译软件STEP7。同时，论文也介绍了自动轧钢机的基本原理和工作流程，并详细说明了可编程控制器在自动轧钢机中的作用。程序涉及了自动轧钢机工作的绝大部分过程。通过使用PLC控制的自动轧钢机，提高了系统的稳定性，确保自动轧钢机能够长期稳定运行。 关键词：可编程控制器、自动轧钢机、梯形图、变频器、控制系统 Abstract: This paper is based on the design of the Siemens S7-200 PLC structure of an automatic steel rolling machine system. The paper begins by discussing the origin and development of automatic steel rolling machines, as well as the current situation of their development in China. It then provides a comprehensive analysis of the proposed solution for the automatic steel rolling machine, including the basic components, features, and working principles of PLCs. The paper also provides a detailed description of the overall design process for the automatic steel rolling machine system, which is based on the Siemens S7-200 PLC series. Within the paper, the various hardware components of the automatic steel rolling machine are described in detail, and the external wiring diagram for the PLC is completed. In terms of programming, the paper utilizes the Siemens PLC specialized ladder diagram software, STEP7. The basic principles and working processes of the automatic steel rolling machine are explained, with specific emphasis on the role of the programmable controller. The program covers the majority of the processes involved in the operation of the automatic steel rolling machine. By implementing a PLC-controlled automatic steel rolling machine, the system stability is improved, ensuring long-term stable operation. Keywords: Programmable Controller, Automatic Steel Rolling Machine, Ladder Diagram, Frequency Converter, Control System