【作者】 孙诚；

【导师】 刘利； 韦有强；

【作者基本信息】 上海交通大学 ， 机械工程自动化， 2014， 硕士

【摘要】 伺服阀是电液伺服系统中的核心元件,其静态和动态性能参数测试在电液伺服系统应用中具有十分重要的意义。本文结合利用虚拟仪器技术和电液伺服阀性能测试技术对现有旧伺服阀性能测试设备改造与升级项目的具体要求,致力于伺服阀的静、动态特性测试原理和方法的深入研究,为伺服阀性能测试设备改造与升级奠定基础和提供理论指导。本文首先深入分析了国内外液压控制领域与伺服阀测试相关技术,针对现有的电液伺服阀性能测试台系统存在的缺陷,结合测试台的功能要求,提出了基于Labview的伺服阀性能测试台的总体改造升级的大方向与目标。其次,本文分析了伺服阀静、动态特性参数,并得到了相对应的数学表达式及其曲线形态。在此基础上,对伺服阀主要静态动态特性的测试原理与方法分析,提出了以动态测试为基础,结合负载流量测试要求的液压控制系统方案。同时建立了液压伺服阀测试系统的数学模型,利用Simulink进行了计算机仿真,验证测试方案的可行性。这为今后类似的多功能测试台的液压回路的设计提供了一种新思路。最后,依据测试台的功能要求,设计了伺服阀性能测试台的软件构建模式,制定了静态及动态测试的测试流程,进而利用Labview软件开发工具对系统主要功能模块进行了详细设计。软硬件采用模块化设计,为将来的扩展预留了空间和便利性。伺服阀性能参数测试台已经投入了实际的使用,改造前后的测试报告比对表明,不仅已达到了测试台改造与升级的要求,而且测试过程的自动化程度和效率明显提高。论文研究成果对后续电液伺服阀性能测试台的深入研究奠定了基础,具有重要的参考价值。更多还原

【Abstract】 Servo valve is the core component of electro-hydraulic servo system, its static and dynamic testing for parameters and characters have significant meaning of the application of electro-hydraulic servo system. This thesis contains several parts, using virtual instrument and electro-hydraulic servo valve performance test to have solutions for upgrade and renovation of outdated servo valve performance test equipment. And lucubrating the static and dynamic performance testing means and theory in order to have solid foundation and provide theoretical guidance on the upgrade and renovation of servo valve testing equipment.Firstly, this thesis has an thorough analysis on the hydraulic control filed and related technology on servo valve testing, aiming at the current defects of existing electro-hydraulic servo valve performance testing stands, together with the functional needs of integrative testing stands, thus to present the direction and goal of upgrade and renovation for servo valve performance testing stand.Secondly, this thesis analyses the static and dynamic characters and parameters of servo valve, and find out relevant response curve and mathematical models. On the basis of analysis result, present the plans for hydraulic control system based on the dynamic test, and combine with the load flow test request. In the meantime, establish the mathematical model of hydraulic servo valve test system, and have simulation calculation on the model using Simulink, so as to make the testing proposals in a more feasible manner. This provides a grand new thought for hydraulic loop designs for multi-functional test stands.Finally, according to the function request for the test stands, thus design the software model of the servo valve performance test stands and draw up the plan of static and dynamic test procedures, moreover, to make use of Labview to have a thorough design for the main function module. Building block design for both software and hardware to be best prepared for the upgrade and renovation of the whole scale for multi-functional test stands in the future.Servo valve performance parameters test stands have already been put into actual use nowadays. Compare the testing report for pre and post upgrade, we found not only meet the needs of the renovation, but also improve the efficiency and higher the degree of automation of the whole testing process. The research and analysis result of this thesis serves as a solid foundation of subsequent development of electro-hydraulic performance test stands, and have very key and important reference value.更多还原