基于s7200plc文化纸机传动控制系统硬件设计学士学位论文.docVIP

基于S7-200PLC文化纸机传动控制系统硬件设计 摘 要 随着世界经济的发展，制浆造纸业已经成为我国工业经济增长的重要支柱，国际上先进的造纸机都朝高效率、低消耗方向发展，这是市场竞争的需要。而目前国内有很多正在运行的造纸机在这方面则处于劣势，有必要进行技术改造，而对于造纸机械的厂家也必须迎头赶上，从设计的源头进行性能提升。传动作为造纸机的核心部分，其发展要求是提高车速和自动化程度。所以研究高性能的纸机电气传动控制系统，对我国造纸行业的发展有着极为重要的意义。 本次设计的为文化纸机传动控制系统，用ABB变频器和西门子PLC所组成的控制网络来完成造纸机电气控制系统设计的,其电气传动控制系统是基于PLC控制的交流变频调速控制系统。通过本课题的设计，可以培养自己分析与解决问题的能力，同时也能对工业生产中运用到的如：电动机、变频器、PLC、工控机、通讯、现场总线、触摸屏等有更深一步的理解。对于电动机的控制方法运用更为深入。 关键词：造纸机，速度链，分部传动，负荷分配 Based on the S7-200 PLC culture paper machine transmission control system hardware design ABSTRACT As the world economic development, pulp and paper industry has become an important pillar of industrial growth, the international advanced paper machines in the high efficiency, low consumption and direction, which is the market competition. And there are a lot of running the paper machine is at a disadvantage in this respect, it is necessary to upgrade the technological transformation, and for paper-making machinery manufacturers also must catch up, the source from the design to enhance performance. Drive as a core part of the paper machine, the development requirements is to improve the speed and automation. The design of the paper machine drive control system for the culture, with ABB Drives and Siemens PLC control network consisting of paper to complete the electrical control system design, the electric drive control system is PLC-based control of AC frequency control system. Through this project is designed to develop their own analysis and problem solving skills, but also can apply to industrial production, such as: motor, inverter, PLC, industrial computer, communications, field bus, touch screen, which are deeper understanding. Motor Control Methods for a more in depth. KEY WORDS: Paper machine, Speed chain, Division drive, Load distribution 目 录 摘 要 I ABSTRACT II 1 绪论 1 1.1 目的和意义 1 1.2 课题背景 1 1.3 国内外发展状况 1 1.4 纸机的类型及工艺流程 2 1.5 本设计的主要任务 4 2 变频调速基础知识 5 2.1 变频器 5 2.1.1 变频器基础原理知识 5 2.1.2 变频器的组成和分类 5 2.1.3 变频器工作原理 6 2.1.4 变频器功能与控制方式 6