（毕业设计论文）《450可逆冷轧机直流传动控制系统设计》.docVIP

燕山大学本科生毕业设计(论文) PAGE II 摘 要 随着工业的发展，对冷轧板带生产也提出了更高的要求，进一步促进了冷轧自动控制技术的发展。只有通过高水平的自动控制系统才能够获得高质量的成品带钢，保证板带生产的高效率、高效益、高质量和低功耗。 本文设计了由西门子S7—300PLC和6RA70直流调速器组成的四辊可逆冷轧机控制系统，详细说明了该系统的过程数据测量、速度控制。应用控制理论，对该控制系统的张力控制进行了系统的研究。 基于直流调速技术，完成了四辊可逆冷轧试验机的主轧机和左右卷曲机的直流调速系统的设计和实现。采用PROFIBUS—DP现场总线技术搭建起系统的控制网络，实现了S7-300与6RA70直流调速器之间的通讯，成功地解决了该控制系统要求响应时间快、抗干扰能力强的问题。 关键词　可逆冷轧机;速度控制；S7—300PLC；PROFIBUS—DP现场总线； 6RA70； 燕山大学本科生毕业设计(论文) Abstract Along with the development of industry, higher requirement is brought forward to the manufacture of cold rolling strap steel, and this also accelerates the development of automation technique of cold reduction. None but through high-leveled automation system can the company obtain finished strap steel product with high quality, and guarantee the manufacturing of strap steel to be with high efficiency, high benefit, high quality and low power consumption. This thesis introduce the configuration of the reversible four roller experimental rolling mill, which composed of a set of SIEMENS S7-300 PLC and 6RA70, then particularizes the methods of process data measurement, speed control. According to the theory of controls, this thesis systemically studys the tension module. Basing on the direct current speed regulation technique, design and realization of the direct current govern system of the main rolling mill and the coiling machine is completed. PROFIBUS-DP bus is applied to configure the control netware of the system. Through PROFIBUS, communication between S7-300 and 6RA70 are successfully realized. Thus settles the problem of rapid respondence and strong anti-jamming ability of the control system. Keywords　　Reversible rolling mill；Speed control；S7-300PLC;；PROFIBUS-DP； 目 录 TOC \o 1-3 \h \z HYPERLINK \l _Toc201476951 摘 要 PAGEREF _Toc201476951 \h I HYPERLINK \l _Toc201476952 Abstract PAGEREF _Toc201476952 \h II HYPERLINK \l _Toc201476953 目 录 PAGEREF _Toc201476953 \h III HYPERLINK \l _Toc201476954 第1章 绪论 PAGEREF _Toc201476954 \h