位移—力反馈轴向变量柱塞泵控制特性研究
发布时间：2018-10-05 15:25
【摘要】：文章以博世力士乐公司生产的A4VSG750-HD型斜盘式柱塞变量泵变量机构为研究对象,通过分析柱塞泵的变量机构内部结构与工作原理,建立A4VSG-HD型液压轴向柱塞泵双向变量机构的数学模型；基于AMESim建立轴向柱塞泵的变量机构模型,分析控制性能与弹簧刚度、预压缩量等关键参数的关系,并在试验装置上对仿真模型的正确性进行验证。具体研究顺序如下： 首先以A4VSG750-HD斜盘式轴向柱塞泵为实体建立三维模型。通过分析柱塞泵的变量机构的内部结构与工作原理,建立A4VSG-HD型液压轴向柱塞泵双向变量机构的数学模型,得出影响柱塞泵控制特性的决定性因素。在UG三维设计软件建立的斜盘式柱塞泵装配模型基础上,联合液压系统仿真软件AMESim和多体系动力分析仿真软件ADAMS,通过两者之间的接口,建立整个柱塞泵的联合仿真模型,利用模型之间的数据传递,建立了斜盘式柱塞泵的机液一体化模型。 其次在AMESim中,对A4VSG750-HD型轴向柱塞泵的变量机构进行仿真,分析变量机构中各个部件对控制特性和动态特性的影响,并通过四组阀芯中心复位弹簧验证数学模型的正确性。 最后在试验装置上,对A4VSG750-HD型轴向柱塞泵的变量机构进行实验验证。得到如下结论： A4VSG-HD型轴向柱塞泵的控制装置对泵的排量调节与先导控制压力有关,泵的排量与先导控制压力成比例关系；伺服阀中心复位弹簧的参数和阀芯端面面积,为变量机构控制范围主要决定因素；系统负载压力、伺服阀左右复位弹簧的刚度以及先导控制压力对变量机构的动态特性有比较明显的影响；本文仿真研究结果与实验结果基本一致,说明本文所建立的变量机构模型是正确的,所得出的结论也具有普遍性,有利于以后斜盘式变量泵变量机构的设计与优化。
[Abstract]:This paper takes the variable mechanism of A4VSG750-HD type oblique disc plunger pump produced by Bosch Rexroth Company as the research object, and analyzes the internal structure and working principle of the variable mechanism of piston pump. The mathematical model of bidirectional variable mechanism of A4VSG-HD hydraulic axial piston pump is established, the variable mechanism model of axial piston pump based on AMESim is established, and the relationship between control performance and key parameters, such as spring stiffness, preloading and so on, is analyzed. The correctness of the simulation model is verified on the test device. The research sequence is as follows: firstly, the three-dimensional model of A4VSG750-HD oblique disc axial piston pump is established. By analyzing the internal structure and working principle of variable mechanism of piston pump, the mathematical model of bidirectional variable mechanism of A4VSG-HD type hydraulic axial piston pump is established, and the decisive factors influencing the control characteristic of piston pump are obtained. Based on the assembly model of oblique disc piston pump established by UG 3D design software, the combined hydraulic system simulation software AMESim and the multi-system dynamic analysis simulation software ADAMS, establish the joint simulation model of the whole piston pump through the interface between the two software. Based on the data transfer between the two models, a mechanical and hydraulic integration model of oblique disc piston pump is established. Secondly, in AMESim, the variable mechanism of A4VSG750-HD axial piston pump is simulated, and the influence of each component of variable mechanism on the control characteristic and dynamic characteristic is analyzed, and the correctness of the mathematical model is verified by four groups of valve core center reset spring. Finally, the variable mechanism of A4VSG750-HD axial piston pump is tested on the test device. The conclusions are as follows: the displacement regulation of A4VSG-HD axial piston pump is related to the pilot control pressure, and the displacement of the pump is proportional to the pilot control pressure; The parameters of the servo valve center reset spring and the area of the spool end face are the main determinants of the variable mechanism control range. The stiffness of the left and right reset spring of the servo valve and the pilot control pressure have obvious effects on the dynamic characteristics of the variable mechanism, and the simulation results in this paper are basically consistent with the experimental results, which shows that the model of the variable mechanism established in this paper is correct. The conclusion is also universal, which is beneficial to the design and optimization of variable mechanism of tilted disc pump.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH322
本文编号：2253899
[Abstract]:This paper takes the variable mechanism of A4VSG750-HD type oblique disc plunger pump produced by Bosch Rexroth Company as the research object, and analyzes the internal structure and working principle of the variable mechanism of piston pump. The mathematical model of bidirectional variable mechanism of A4VSG-HD hydraulic axial piston pump is established, the variable mechanism model of axial piston pump based on AMESim is established, and the relationship between control performance and key parameters, such as spring stiffness, preloading and so on, is analyzed. The correctness of the simulation model is verified on the test device. The research sequence is as follows: firstly, the three-dimensional model of A4VSG750-HD oblique disc axial piston pump is established. By analyzing the internal structure and working principle of variable mechanism of piston pump, the mathematical model of bidirectional variable mechanism of A4VSG-HD type hydraulic axial piston pump is established, and the decisive factors influencing the control characteristic of piston pump are obtained. Based on the assembly model of oblique disc piston pump established by UG 3D design software, the combined hydraulic system simulation software AMESim and the multi-system dynamic analysis simulation software ADAMS, establish the joint simulation model of the whole piston pump through the interface between the two software. Based on the data transfer between the two models, a mechanical and hydraulic integration model of oblique disc piston pump is established. Secondly, in AMESim, the variable mechanism of A4VSG750-HD axial piston pump is simulated, and the influence of each component of variable mechanism on the control characteristic and dynamic characteristic is analyzed, and the correctness of the mathematical model is verified by four groups of valve core center reset spring. Finally, the variable mechanism of A4VSG750-HD axial piston pump is tested on the test device. The conclusions are as follows: the displacement regulation of A4VSG-HD axial piston pump is related to the pilot control pressure, and the displacement of the pump is proportional to the pilot control pressure; The parameters of the servo valve center reset spring and the area of the spool end face are the main determinants of the variable mechanism control range. The stiffness of the left and right reset spring of the servo valve and the pilot control pressure have obvious effects on the dynamic characteristics of the variable mechanism, and the simulation results in this paper are basically consistent with the experimental results, which shows that the model of the variable mechanism established in this paper is correct. The conclusion is also universal, which is beneficial to the design and optimization of variable mechanism of tilted disc pump.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH322
【引证文献】
相关硕士学位论文 前2条
1 秦彦凯;电液比例变排量轴向柱塞泵控制特性研究[D];太原理工大学;2012年
2 张君_e;FPSO软管绞车液压系统恒功率特性研究[D];大连海事大学;2012年
，本文编号：2253899
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