【作者】 王莉；

【导师】 赵众；

【作者基本信息】 北京化工大学 ， 控制科学与工程， 2015， 硕士

【摘要】 现如今,在生产工艺不断改进的同时,对于整个过程控制的水平要求也日益提高。对于工业过程的操作优化,可以不改变原有的工业装置,仅仅通过改变其操作条件实现对装置的优化,进而可以达到提高设备利用率、提高产量、增加效益的效果。一般的操作调优方法包括数学建模法和在线搜索法,但是一般这两种方法都有机理复杂建模困难、抗干扰性较差等问题。相关积分优化方法把目标函数及其调优变量都看作动力学系统进行处理,并把调优变量设置为均值可控的随机变量,因此无需建模便可实现对工业过程的操作调优且具有较强的抗干扰性。因此,本文对相关积分优化方法做了深入的研究,具体的研究内容如下所述：首先,本文研究了相关积分方法的基本原理及其递推优化过程,以及相关积分优化方法的优点及其适用条件。在原来的相关积分方法的基础上,提出了一种新的罚函数方法将输入输出约束加入到相关积分方法中去,实现在满足约束输入输出范围的条件下对工业过程操作调优,并对这种双曲罚函数的收敛性和可行性做了证明,为下文对工业过程的操作调优奠定了基础。其次本文将加约束的相关积分优化方法运用到碳二加氢反应器中。先介绍了碳二加氢反应器的反应流程,一般的碳二加氢反应器的操作调优方法并用相关积分优化方法实现了对碳二加氢反应器的操作调优,很好的解决了中石化某烯烃厂碳二加氢反应器存在的过加氢现象,提高了产品质量。最后,介绍了噪声种类对相关积分优化方法的影响,先是介绍了相关积分方法的强抗干扰能力,然后将基于核主元分析的相关积分方法运用到包含有色噪声系统的操作调优中去,能够保证系统梯度收敛到真实值附近,并可实现对系统的操作调优。更多还原

【Abstract】 Optimization for industrial process is a method that can improve the utilization rate of equipment and increase the production and efficiency by changing the operating conditions without changing equipments. In general there are two ways for the optimization:the mathematical modeling method and online search method which can be difficult in modeling and very weak on anti-interference.First, research on the basic principle and the recursive process correlation integration method are given in this article. Also, a new kind of penalty function method is given to take constraints of the input and output into consideration and it will help fulfill the idea of optimization of the industrial process. It’s Astringency and feasibility are also proved and lay the foundation for the industrial use of optimization.Secondly, the correlation integration method with constraints is applied into the acetylene hydrogenation reactor. The basic theory and reaction process of the acetylene hydrogenation reactor are given in this paper. Also the common ways of optimization for acetylene hydrogenation reactor are also given. Most importantly, the correlation integration method with constraints is used to optimize the acetylene hydrogenation reactor in an olefin Plant in Sinopec and solve the over hydrogenation problem and develop the quality of the products.Finally, The influence of noise and colored noise for the correlation integration method is studied in the paper. The strong anti interference ability of correlation integration method is presented. To optimize the system with the colored noise, Kernel Principle Component Analysis is given and the simulation results show its feasibility for optimization.更多还原