工业阀门电液位置伺服驱动系统的研究及应用

发布时间：2018-03-27 10:52

本文选题：电液伺服　切入点：位置控制　出处：《浙江大学》2012年硕士论文

【摘要】：随着现代工业发展对机械的控制性能的要求越来越高,电液伺服技术以其响应快、精度高、体积小、输出力大等特点广泛应用于国防和工业的诸多领域,如航空航天、有色冶炼、水利水电、石油化工、机械制造等。电液伺服位置控制系统是最基本的、最典型的一种电液伺服控制系统,并得到广泛的应用,具有重大的工程实用价值和理论研究意义。本论文针对电液伺服四通阀控对称缸及电液伺服三通阀控非对称缸位置伺服系统,进行了非线性与线性建模,分别通过实例进行仿真,并对两种理论的仿真结果进行对比,探讨它们的适用范围；研制了基于四通电液伺服阀的蝶阀的驱动控制系统,并进行了理论分析和动静态试验,结果表明蝶阀的控制精度及自动化程度得到提高,已在钢厂热轧线上应用；对基于三通电液伺服阀的风机防喘阀控制系统进行了理论分析和动静态试验,探讨了系统各结构参数对其响应特性的影响。有关各章节内容分述如下：第1章,在综合分析国内外文献的基础上,介绍了电液伺服技术和位置控制系统的发展。介绍了典型的电液伺服阀和电液伺服位置控制系统。以电液伺服蝶阀驱动控制为典型应用,介绍了蝶阀的基本概况及其驱动装置的研究现状。以电液伺服风机防喘阀控制为典型应用,介绍了透平鼓风机的概况和风机喘振现象及防喘振的方法。最后,概括了本课题的研究意义及研究内容。第2章,针对电液伺服四通阀控对称液压缸与电液伺服三通阀控非对称液压缸位置伺服系统,分别建立了系统的非线性与线性模型,并进行了仿真分析,探讨了他们的适用范围。第3章,设计了基于四通电液伺服阀的蝶阀的驱动控制系统,介绍了该系统的结构与工作原理；建立了系统的非线性模型；运用AMESim软件对非线性仿真模型进行分析,讨论了各结构参数对系统产生动态特性的影响；最后,对基于四通电液伺服阀的蝶阀的驱动控制系统进行了动静态试验。第4章,分析了基于三通电液伺服阀的风机防喘阀控制系统,介绍了三通电液伺服阀及其位置控制系统的结构与工作原理；建立了系统的非线性模型；运用AMESim软件对非线性仿真模型进行分析,讨论了各结构参数对系统产生动态特性的影响；最后,对基于三通电液伺服阀的风机防喘阀控制系统进行了动静态试验。第5章,对主要研究工作和得到的成果进行了概括,并展望了下一步的研究工作和方向。
[Abstract]:With the development of modern industry, the requirement of mechanical control performance is becoming higher and higher. Electro-hydraulic servo technology is widely used in many fields of national defense and industry, such as aerospace, because of its characteristics of fast response, high precision, small volume, large output force and so on. Non-ferrous smelting, water conservancy and hydropower, petrochemical, mechanical manufacturing, etc. Electro-hydraulic servo position control system is the most basic and typical electro-hydraulic servo control system, and has been widely used. It has great practical engineering value and theoretical significance. In this paper, the nonlinear and linear modeling of the electro-hydraulic servo four-way valve controlled symmetrical cylinder and the electro-hydraulic three-way valve controlled asymmetric cylinder position servo system are carried out, and the simulation results of the two theories are compared. The driving control system of butterfly valve based on four-way electro-hydraulic servo valve is developed, and the theoretical analysis and dynamic and static test are carried out. The results show that the control precision and automation degree of butterfly valve are improved. It has been applied in hot rolling line of steel plant, the control system of blower anti-surge valve based on three-way electro-hydraulic servo valve is theoretically analyzed and dynamic and static test is carried out, and the influence of system structure parameters on its response characteristic is discussed. The relevant chapters are broken down as follows:. Chapter 1, on the basis of comprehensive analysis of domestic and foreign literature, The development of electro-hydraulic servo technology and position control system is introduced. The typical electro-hydraulic servo valve and electro-hydraulic servo position control system are introduced. This paper introduces the basic situation of butterfly valve and the research status of driving device. Taking the control of anti-surge valve of electro-hydraulic servo fan as a typical application, the general situation of turbine blower, the phenomenon of blower surge and the method of preventing surge are introduced. The significance and content of the research are summarized. In chapter 2, the nonlinear and linear models are established for the electro-hydraulic servo four-way valve controlled symmetrical hydraulic cylinder and the electro-hydraulic servo three-way valve controlled asymmetric hydraulic cylinder position servo system, and the simulation analysis is carried out. The scope of their application is discussed. In chapter 3, the drive and control system of butterfly valve based on four-way electro-hydraulic servo valve is designed, the structure and working principle of the system are introduced, the nonlinear model of the system is established, and the nonlinear simulation model is analyzed by using AMESim software. The influence of the structure parameters on the dynamic characteristics of the system is discussed. Finally, the dynamic and static test of the butterfly valve drive control system based on the four-way electro-hydraulic servo valve is carried out. In chapter 4, the control system of blower anti-surge valve based on three-way electro-hydraulic servo valve is analyzed, the structure and working principle of three-way electro-hydraulic servo valve and its position control system are introduced, and the nonlinear model of the system is established. The nonlinear simulation model is analyzed by using AMESim software, and the influence of structural parameters on the dynamic characteristics of the system is discussed. Finally, the dynamic and static test of the control system of the blower anti-surge valve based on the three-way electro-hydraulic servo valve is carried out. In chapter 5, the main research work and the results obtained are summarized, and the further research work and direction are prospected.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137

【引证文献】