基于滑阀配磨仿真曲线的伺服阀性能评估方法研究
发布时间：2018-12-29 16:53
【摘要】：电液伺服阀作为电液伺服系统的关键元件，广泛应用于航空航天很多要求快速精确反应并且功率大的控制场合。伺服阀中精密部件加工和装配对于伺服阀的性能指标影响很大，其中功率级滑阀的加工是伺服阀生产的关键因素。目前滑阀加工较为先进的配磨方法为液动配磨的方法，加工方式为偶件配做，各阀芯阀套并没有互换性，配磨后的滑阀要经过整阀调试才能确定合格与否以及加工质量的好坏。为了提高伺服阀的制造效率，需要在滑阀配磨结束之后对于加工质量以及装配成整阀后的性能进行评价。 本文首先明确了伺服阀液动配磨的工作原理，并且得到了配磨曲线的基本特性，分析了伺服阀的主要性能指标。利用灰关联分析方法，得到了影响各性能指标的主要加工误差因素。根据双喷嘴挡板式伺服阀的结构特点，利用高级系统工程建模仿真平台AMESim对各个组件分别建模并根据相互关系建立整阀模型。其中功率级滑阀的各个加工参数可以在参数模式下进行独立设置进行仿真，得到伺服阀的流量压力以及内泄漏特性曲线。根据国家军用标准及伺服阀试验标准规定的伺服阀相应特性指标的合格标准确定滑阀各加工参数的合格范围。 基于液动配磨台的测量原理，利用AMESim建立的流量式测量的仿真模型对液动配磨台的测量过程进行仿真。分别将被测滑阀加工参数设置为满足整阀性能要求的参数范围，得到不同的搭接量测量曲线。定义一系列描述曲线特征的参量，找到各参量与滑阀参数的关系，从而得到曲线特征参量与整阀特性之间的关系。最后利用实际滑阀进行配磨实验，得到搭接量测量曲线，记录下曲线的特征参数。对各组滑阀进行跟踪，进行整阀调试实验，得到对应的整阀特性。对于本文中软件仿真的滑阀评价标准进行验证，并对于实验呈现的结果加以分析。实验证明，仿真得到的评价标准是可靠的，可以将其应用于伺服阀阀芯阀套评价系统上加以应用，，评估结果能够满足生产的需要。
[Abstract]:As the key component of electro-hydraulic servo system, electro-hydraulic servo valve is widely used in many control situations which require rapid and accurate response and high power. The machining and assembling of precise parts in servo valve have great influence on the performance index of servo valve, and the machining of power level slide valve is the key factor in the production of servo valve. At present, the more advanced grinding method of slide valve is the method of hydrodynamic grinding, the processing method is the matching of couple parts, the valve sleeve of valve core does not have interchangeability, the slide valve after grinding must go through the adjustment of the whole valve to determine whether it is qualified or not and the quality of processing. In order to improve the manufacturing efficiency of the servo valve, it is necessary to evaluate the machining quality and the performance of the whole valve after the sliding valve grinding is finished. In this paper, the working principle of servo valve hydrodynamic grinding is clarified, and the basic characteristics of grinding curve are obtained, and the main performance indexes of servo valve are analyzed. The main processing error factors affecting each performance index are obtained by using grey correlation analysis method. According to the structural characteristics of the double nozzle baffle servo valve, each component is modeled by the advanced system engineering modeling and simulation platform AMESim and the whole valve model is established according to the mutual relationship. The machining parameters of the power level slide valve can be set up independently in the parameter mode and the flow pressure and internal leakage characteristic curve of the servo valve can be obtained. According to the national military standard and servo valve test standard, the qualified standard of servo valve characteristic index is used to determine the qualified range of each processing parameter of slide valve. Based on the measuring principle of the hydraulic distribution mill, the measurement process of the hydraulic distribution mill is simulated by using the flow measurement simulation model established by AMESim. The machining parameters of the tested slider valve were set to the range of parameters to meet the performance requirements of the whole valve, and different lap measurement curves were obtained. A series of parameters describing the characteristics of the curve are defined, and the relationship between the parameters and the parameters of the slide valve is found, and the relationship between the characteristic parameters of the curve and the characteristics of the whole valve is obtained. Finally, using the actual sliding valve to carry out the grinding experiment, the lap measurement curve is obtained, and the characteristic parameters of the curve are recorded. The whole valve was tracked and the whole valve characteristic was obtained. The evaluation standard of slide valve in software simulation in this paper is verified, and the experimental results are analyzed. The experimental results show that the evaluation standard obtained by simulation is reliable and can be applied to the evaluation system of valve core and valve sleeve of servo valve. The evaluation results can meet the needs of production.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.5
本文编号：2395094
[Abstract]:As the key component of electro-hydraulic servo system, electro-hydraulic servo valve is widely used in many control situations which require rapid and accurate response and high power. The machining and assembling of precise parts in servo valve have great influence on the performance index of servo valve, and the machining of power level slide valve is the key factor in the production of servo valve. At present, the more advanced grinding method of slide valve is the method of hydrodynamic grinding, the processing method is the matching of couple parts, the valve sleeve of valve core does not have interchangeability, the slide valve after grinding must go through the adjustment of the whole valve to determine whether it is qualified or not and the quality of processing. In order to improve the manufacturing efficiency of the servo valve, it is necessary to evaluate the machining quality and the performance of the whole valve after the sliding valve grinding is finished. In this paper, the working principle of servo valve hydrodynamic grinding is clarified, and the basic characteristics of grinding curve are obtained, and the main performance indexes of servo valve are analyzed. The main processing error factors affecting each performance index are obtained by using grey correlation analysis method. According to the structural characteristics of the double nozzle baffle servo valve, each component is modeled by the advanced system engineering modeling and simulation platform AMESim and the whole valve model is established according to the mutual relationship. The machining parameters of the power level slide valve can be set up independently in the parameter mode and the flow pressure and internal leakage characteristic curve of the servo valve can be obtained. According to the national military standard and servo valve test standard, the qualified standard of servo valve characteristic index is used to determine the qualified range of each processing parameter of slide valve. Based on the measuring principle of the hydraulic distribution mill, the measurement process of the hydraulic distribution mill is simulated by using the flow measurement simulation model established by AMESim. The machining parameters of the tested slider valve were set to the range of parameters to meet the performance requirements of the whole valve, and different lap measurement curves were obtained. A series of parameters describing the characteristics of the curve are defined, and the relationship between the parameters and the parameters of the slide valve is found, and the relationship between the characteristic parameters of the curve and the characteristics of the whole valve is obtained. Finally, using the actual sliding valve to carry out the grinding experiment, the lap measurement curve is obtained, and the characteristic parameters of the curve are recorded. The whole valve was tracked and the whole valve characteristic was obtained. The evaluation standard of slide valve in software simulation in this paper is verified, and the experimental results are analyzed. The experimental results show that the evaluation standard obtained by simulation is reliable and can be applied to the evaluation system of valve core and valve sleeve of servo valve. The evaluation results can meet the needs of production.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.5
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