乳化液系统论文：冷轧机乳化液系统的优化设计.doc

乳化液系统论文：冷轧机乳化液系统的优化设计【中文摘要】乳化液系统是冷轧板生产过程当中至关重要的一个环节,对冷轧板起着润滑作用、冷却作用和清洗作用。优化冷轧机组乳化液流量的控制,不但有益于降低生产的成本,还可以大大提高轧板的质量,增加市场竞争力。本文在现有生产设备的基础之上,针对乳化液的供乳过程中存在的滞后、多变量、外界干扰因素多、控制突变等诸多问题。以鞍钢冷轧厂乳化液站现场生产布局为条件,以系统压力为控制目标,对乳化液系统中的两个主要控制系统即大旁通和变频电机泵,对乳化液系统实行优化控制。本文的主要工作如下:1.了解控制对象:针对生产现场设备条件,认识两个主要的控制对象,了解它们的控制性能和控制机理,为实现优化控制奠定控制基础。2.优化控制器:根据控制性能,分别对大旁通和变频电机泵设计了基于遗传算法优化的模糊控制器。在MATLAB仿真环境下,通过仿真证实了控制效果相比于普通控制器在控制精度上更具优越性。3.解决突变因素:基于现场条件,设计了主要控制器和辅助控制器进行协调控制,以解决由于选择控制对象不当而引起乳液压力突变和控制滞后的问题。最终,经过现场试验数据分析,证明了优化控制策略的有效性和优越性。【英文摘要】Emulsion system is a crucial part of producting cold rolled strip, and it plays an important part in lubrication, cooling and cleaning. It is benefit both in reducing the cost and improving the competitiveness to optimizate the control the flow of the Emulsion.On the exist producing equipment, aiming at problems such as delay, multi-variables and many interference factors outside and control burst,etc., by using the equipment layout of emulsion scene in AN STEEL Cooling Roll Plant and seting the presure of system as control object, the article optimizate two major of controlled system, that is, big bypass and pump with frequency conversion AC motor. The main tasks in this article are as follows.1. Knowing the controlled objects. According to the sitiution of the producing spot and equipment, it is necessary to know the two main controlled objects and study their control properties and principles. To build the controlling foundation for realizing the optimization control.2. Optimizing the controller: By knowing the congtrol properties of controller, the fuzzy controller based on genetic algorithm for controlling the big bypass and pump with frequency conversion AC motor is designed in this article. Under the simulation circumstances of MATLAB, simulations were made and the results show that the controller is better than the former in performance.3. Solving the burst problems. According to the circumstances of the scene, the main controller and the auxiliary controller are designed to work coordinationly so that problems, such as emulsion pressure burst and controlling delays because of selecting wrong controlling objects, are solved. At last, by analysis the experiments data on the spot, the feasibility and stability of the optimizing control tactics are approved.【关键词】乳化液系统 模糊控制 遗传算法 协调控制【英文关键词】Emulsion System Fuzzy Control Genetic Algorithm Work Coordinationly【备注】索购全文在线加我：1.3.9.9.3.8848 同时提供论文一对一写作指导和论文发表委托服务【目录】冷轧机乳化液系统的优化设计中文摘要4-5ABSTRACT5-61. 绪论9-111.1 课题的来源91.2 课题的背景与意义91.3 本文研究的意义及主要工作9-112. 乳化液对流量控制的影响因素11-152.1 乳化液轧制油的组成11-122.2 乳化液的作用122.3 流体理论的应用12-142.4 本章小结14-153. 乳化液系统压力控制的实现15-393.1 压力调节阀控制系统压力16-243.1.1 气动比例位置系统原理16-173.1.2 气缸的活塞力平衡方程式173.1.3 比例伺服阀的流量方程17-183.1.4 比例阀的压力流量方程18-193.1.5 阀控缸控制系统图19-203.1.6 阀控缸控制系统传递函数20-213.1.7 比例阀的数学模型21-233.1.8 气动比例位置系统总模型23-243.2 异步电机带动离心泵控制系统的压力24-383.2.1 异步电机变频调速系统243.2.2 异步电机矢量控制基本思想24-263.2.3 三相异步电机在两相坐标系上的数学模型26-273.2.4 按转子磁链定向的矢量控制方程27-283.2.5 基于Matlab 交流异步电动机变频调速系统28-353.2.6 变频电机综合负载模型建模35-383.3 本章小结38-394. 基于遗传算法的模糊控制器的优化设计39-594.1 设计遗传算法模糊控制器的意义394.2 模糊控制器的基本原理39-454.2.1 精确量的模糊化40-424.2.2 模糊控制规则和模糊推理42-434.2.3 模糊控制输出的清晰化处理43-454.3 乳化液系统模糊控制器的设计45-474.4 遗传算法的概述47-504.4.1 遗传算法的优越性48-494.4.2 遗传算法的基本操作步骤49-504.5 基于遗传算法的模糊控制器的优化设计50-534.5.1 优化策略504.5.2 遗传算法优化模糊控制器设计过程50-534.6 基于Matlab 下系统仿真结果分析53-584.7 本章小结58-595. 乳化液协调控制系统59-685.1 变频电机应用技术59-615.2 控制器结构图61-645.2.1 逻辑协调选择器6