外文翻译--加热炉温度串级控制系统.doc

外文原文Furnace temperature cascade control systemWith the rapid development of Chinas national economy, the scope of application of heating furnace more and more widely. And heating furnace temperature control is in the process of industrial production often met in process control, and some of the temperature of a process control has a direct effect on the quality of products and production. Along with the development of network technology and the whole factory fully realized the automation management level two search for monster, the requirements in the process level through the corresponding terminal understand any equipment or any a device and the control of the production process. Therefore, process control system in heating furnace system widely applied, it is an important part of the heating furnace control system, is to and control system of a total brought and expand Modern heating furnace production process can realize the height of the process control to ensure the heating process in the temperature of the accurate control, industrial production provides favorable conditions. Heating furnace industrial production is an important device, it is the task of the raw material heated to a definite temperature, to ensure the smooth progress of the next working procedure. The control of the heating furnace before most of the old manual control, need operators fully manual control valve of raw materials, fuel, and the opening of the furnace. On the introduction of the process control system after, this situation got big improvement. How to guarantee the raw materials at the exit temperature is to realize the basic premise of heating furnace temperature control. The main task of the heating furnace control is to make sure that the process to achieve and maintain medium final temperature range in the process, since it has strong coupling, delay features, control up is very complicated. Also, in recent years the energy conservation, recycling and rational utilization of increasing attention. Heating furnace is metallurgy, oil refining and other production departments typical thermal technology equipment, energy consumption is very large. Therefore, in the design of heating furnace control system, in meet the technological requirements, under the premise of energy saving is also an important quality index, to ensure that the thermal efficiency of the heating furnace highest, economic benefit. In addition, in order to better protect the environment, to design furnace control system, it also ensures that fuel burn adequately, is burning the harmful gas produced at least, emission reduction purposes. For now, the domestic heating furnace control most of the old manual control still, need to operators fully manual control fuel, raw material valve opening, burning furnace, in this way, the precision of the flow control will be very bad, operation of timeliness also will be lower, the workers operation difficulty also further increase. For this, we design a set of cascade control as the foundation of the heating furnace cascade control system, this to raises industrial production has a positive meaning.Automatic control of production process, with the technical requirements, security, economic production rising cases, simple, conventional control can not meet the modern production. The traditional single-loop control system is difficult to make the system completely anti-interference. Single loop control system in many occasions can meet the requirement of production process stability, but if the process object has a larger capacity, with larger changes or other disturbance is strong, in this case place an order loop control system will be impossible to achieve high quality control, in the production process requirements are very high it will be difficult to meet the requirements. This is, in the production of demand driven by the cascade control will emerge as the times require. Cascade control is the application of the first, the best, the most widely used a complex control system. It is characterized by the two regulator is connected in series, the main regulator output as the input of the regulator, applied to the time constant and time delay large object. Cascade control system with good anti-jamming capability, rapidity, flexibility and quality control, and therefore a complex process control industy has been widely used. Cascade control system of the characteristics and the main and sub-loop design was elaborate ,designed cascade control system, furnace, and MATLABbased incremental PID algorithm is applied in the control system.中文译文 加热炉温度串级控制系统随着我国国民经济的快速发展，加热炉的使用范围越来越广泛。而加热炉温度控制是工业生产过程中经常遇到的过程控制，有些工艺过程对其温度的控制效果直接影响着产品的质量和产量。以前加热炉的控制系统大多数是采用模拟控制系统，且各种数据只在加热炉系统中进行单独储存和通过加热炉自己的仪表进行观察、判断故障。随着网络技术的发展和整个工厂完全实现两级自动化管理，要求在过程器上通过相应的终端了解任何一个设备或任何一个装置的控制情况以及生产情况。因此，过程控制系统在加热炉系统中得到广泛的应用，它是加热炉控制系统的重要部分，是对控制系统的一个总领和扩充。现代加热炉的生产过程可以实现高度的过程控制，以保证在加热过程中温度的准确控制，这就为工业生产提供了有利条件。加热炉是工业生产中的一个重要装置，它的任务是把原料加热到一定温度，以保证下道工序的顺利进行。因此加热炉的温度控制起着举足轻重的作用，直接关系到产量能源污染工人劳动强度等等。以前加热炉的控制多数采用老式的人工控制 ，需要操作人员完全手动控制燃料原料阀的开度，进行烧炉。这样一来，流量控制的精度极差，操作的及时性也大大降低。在引入了过程控制系统之后，这一情况得到了大大的改善。如何保证原料出口处原料温度是实现加热炉温度控制的基本前提。加热炉控制的主要任务就是保证工艺介质最终温度达到并维持在工艺范围之内，由于其具有强耦合，大滞后等特性，控制起来非常复杂。同时，近年来能源的节约，回收和合理利用日益受到关注。加热炉是冶金，炼油等生产部门的典型热工设备，能耗很大。因此，在设计加热炉控制系统时，在满足工艺要求的前提下，节能也是一个重要的质量指标，要保证加热炉的热效率最高，经济效益最大。另外，为了更好地保护环境，再设计加热炉控制系统时，还要保证燃料充分燃烧，是燃烧产生的有害气体最少，达到减排的目的。目前而言，国内加热炉控制多数仍旧采用老式的人工控制，需操作人员完全手动控制燃料，原料阀的开度，进行烧炉，这样一来，流量控制的精度将极差，操作的及时性也将大大降低，对工人操作难度也进一步加大。为此我们设计一套以串级控制为基础的加热炉串级控制系统，这对提高工业产能具有相当积极的意义。生产自动控制过程中，随着工艺要求，安全，经济生产不断提高的情况下，简单，常规的控制已不能适应现代化生产。传统的单回路控制系统很难使系统完全抗干扰。单回路控制系统系统在很多场合下都能满足生产工艺的要求稳定的工作，但是如果