【作者】 笪靖；

【导师】 丁凡；

【作者基本信息】 浙江大学 ， 机械电子工程， 2012， 硕士

【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。更多还原

【Abstract】 With the development of modern industry, electro-hydraulic servo technology has been widely used in both military and civil industry such as aeronautics and astronautics, nonferrous metal smelting, water resources and hydropower, petroleum and chemical industry, and machinery manufacturing, for its quick response, high precision, small volume and large output force. Electro-hydraulic servo position control system is one of the most basic and typical electro-hydraulic servo control systems, and has been widely used, which makes a difference in both engineering practice and theory research.For asymmetric cylinder controlled by electro-hydraulic servo four way valve and unsymmetric cylinder controlled by electro-hydraulic servo three way valve, both nonlinear model and linear model are established, the simulation of which are done and the differences of the two theory are analysed. Based on the four way electro-hydraulic servo valve, the control system of a butterfly valve is developed, and the theory analysis and static and dynamic test of which proved that the control precision and automation degree have been improved. At present, the system has been applied in hot rolling production line of steel industry. The control system of fan anti-surge valve based on three way electro-hydraulic servo valve is developed, the thery analysis and static and dynamic test are done, and the influence of various structural parameters are analysed.Contents of each chapter list as follows:In chapter 1, on the basis of the analysis of materials from home and abroad, the development of electro-hydraulic technology and position control system are introduced. And the typical electro-hydraulic valves and electro-hydraulic position control systems are introduced. Based on the electro-hydraulic servo butterfly valve control system, the basic overview and drive equipment of the butterfly valve are introduced. Based on the electro-hydraulic servo fan anti-surge valve control system, the basic overview of turbo blower and the fan surge phenomenon are introduced. At last, the significance and contents are mentioned. In chapter 2, for asymmetric cylinder controlled by electro-hydraulic servo four way valve and unsymmetric cylinder controlled by electro-hydraulic servo three way valve, both nonlinear model and linear model are established, the simulation of which are done and the differences of the two theory are analysed, and the scope of application of linear model and nonlinear model is analysed.In chapter 3, the drive system of a butterfly valve based on four way electro-hydraulic servo valve is designed, the structure and work principle of which are introduced. The nonlinear model of the system is established, and the the simulation is done based on the nonlinear model by AMESim, and the influence of various structural parameters is discussed. At last, the static and dynamic test of the systm is done.In chapter 4, the control system of fan anti-surge valve based on three way electro-hydraulic servo valve is analysed, and the structure and work principle of three way electro-hydraulic servo valve and position control system are introduced. The nonlinear model of the system is established, and the the simulation is done based on the nonlinear model by AMESim, and the influence of various structural parameters is discussed. At last, the static and dynamic test of the systm is done.All achievements of the thesis are summarized and the further research work is put forward in chapter 5.更多还原