集散系统的应用设计_毕业设计论文.doc

集散系统的应用设计 摘 要 水泥作为发展国民经济的主要的原材料，我国在近20年的改革开放的形势下，水泥工业不论从技术、产品总量、装备方面都得到巨大发展但是我国。，国家建材局提出建材业“由大变强，靠新出强”跨世纪战略。同时。设备大型化是实现工艺技术的手段和途径。由于近年来。采用这种系统可以实现电动机成组程序控制，过程量的处理、采集、调节和显示。。过程控制角度来看，是一个时间常数大、滞留时间长、外干扰多、相互干扰关系复杂的过程。水泥制造过程的三大部分（水泥制成、原料制备和熟料烧成）中，熟料烧成系统是个控制复杂、互相干扰因素多、在节能和质量方面占有重要地位的关键过程。DCS，过程控制，PID ABSTRACT Cement as main raw materials, development of the national economy in China under the situation of nearly 20 years of reform and opening up, the cement industry no matter from the aspects of technology, product quantity, equipments have great development but our country cement industry in the industrial structure, product variety, technology and equipment level and the advanced world level still have large gaps. Cement industry in China in order to make better adapt to the development of the national economy and the reform and opening up to participate in international competition in the market the needs of the national building put forward building materials industry from large to strong, strong on new cross-century strategy. NSP technology provides the possibility of improve the single ability of cement equipment and function, and the pursuit of high efficiency, high performance, low cost, promote the large-scale cement equipment in the process. Because in recent years, computer control technology, communication technology and the rapid development of graphics display technology, the DCS this decentralized control, centralized management of distributed control system has been widely used in cement industry in the world. Motor group is realized by using this system can process control, the process of acquisition, processing, display and control. Has greatly raised Labour productivity and improve the management and operation level of the factory. Cement process are solid and powder material for processing production, wind, coal, is expected to produce complex thermal process change, more uncontrollable factors. From the perspective of process control, it is a