毕业论文_贮槽液位控制系统设计.doc

过程控制课程设计 设计题目：贮槽液位控制系统设计 学 院： 电 气 工 程 学 院 摘要 日新月异的自动化技术为传统产业的改造、生产水平的提高和产品更新换代注入了强大活力。微电子技术和计算机、通信、网络技术的崛起，给自动化技术假期了腾飞的双翼，成为当代发展最快、影响最大、最引人注目的高技术之一，在百花争艳的信息化舞台上都灵风少。现在，自动化技术不仅渗透于国民经济各行各业，对社会、经济、文化、军事、科技等各个领域都有着深刻的影响，而且正悄然地改变着人们的生产、工作、生活乃至思维方式。在现代工业生产过程中，随着生产规模的不断扩大、生产过程的强化、对产品质量的严格要求以及各公司之间的激烈竞争，人工操作与控制已远远不能满足现代化生产的要求。过程控制系统以及成为工业生产过程必不可少的装备，为保证现代企业安全、优质、低消耗和高效益生产提供了有效的技术手段。 在本次课程设计中，给出液体贮槽的结构图，要求液位贮槽内的液位需维持在某给定值上下，或在某一小范围内变化，并保证物料不产生溢出。根据过程控制设计原则——用最简单的系统实现过程控制。基于此，我们选用了单回路反馈控制系统。 关键字：自动化技术 过程控制系统 液位控制 单回路 Rapid automation technology for traditional industry reformation, the improvement of production and product upgrading injected strong vitality.Microelectronics technology and the rise of computer, communication and network technology to the automation technology vacation fly wings, become the fastest growing, most affected, one of the most striking high technology in Turin, flowers bloom information stage of the wind.Now, automation technology not only penetrates into the national economy in all walks of life to society, economy, culture, military, science and technology and other fields have a profound effect, and is quietly changing peoples production, work, life and even the way of thinking.In modern industrial production process, with the expansion of the scale of production, the production process, to strengthen the strict requirements of product quality and the fierce competition between companies, manual operation and the control has far cannot satisfy the requirement of modern production.Process control system, and become the indispensable equipment in industrial production process, to ensure the safety of the modern enterprise, high quality, low consumption and high benefit production provides effective technical means. In the curriculum design of liquid storage tank structure, demand level in the storage tank to maintain in a given value of liquid level fluctuation, or change in a small scope, and to ensure that the material does not produce overfl