轴向柱塞泵的变量控制方法与特性研究

发布时间：2018-06-23 19:16

本文选题：变量控制 + 数字泵　；参考：《浙江大学》2011年硕士论文

【摘要】：本课题研究的对象是轴向柱塞泵的变量控制方法与特性。在对一些常见的机液式变量控制研究的基础上,提出基于PWM高速开关阀轴向柱塞泵数字式变量控制。课题搭建了机液式压力控制泵、机液式压力流量复合控制泵、机液式压力流量功率复合控制泵及大排量闭式轴向柱塞泵的仿真模型,并对它们进行了仿真分析。在此基础上,课题进一步搭建了数字式轴向柱塞泵(本论文简称数字泵)的联合仿真模型,仿真与试验结合,实现并验证数字泵的压力控制、压力流量复合控制及压力流量功率复合控制三种控制功能。本课题首次采用LabVIEW与AMESim建立数字泵的联合仿真模型,并在此模型基础上对数字泵压力控制、压力流量复合控制及压力流量功率复合控制三种控制形式的静态性能进行了仿真分析。同时,也对数字泵三种控制形式下的压力控制、流量控制、功率控制的动态性能进行了仿真分析。最后,通过数字泵的静态性能试验对数字泵的压力控制功能、压力流量复合控制功能及压力流量功率复合控制功能进行了验证。本论文的主要内容如下：第一章,介绍了轴向柱塞泵变量控制概况及研究现状。通过调研了国内外关于变量控制的研究成果,确定了本课题的研究思路及内容,指出了本课题的研究难点。第二章,详细介绍了几种常见变量控制泵的工作原理、静动态性能。并在此基础上建立它们的仿真模型,最终针对这几种变量控制的静态或动态性能进行了仿真分析。第三章,首先阐述数字泵三种控制形式与机液式压力控制泵、压力流量复合控制泵及压力流量功率复合控制泵的联系。在此基础上将数字泵分成几部分进行建模。主要有高速开关阀的建模、三种控制形式的三个控制模块的建模。最后介绍数字泵联合仿真模型的建立。第四章,对数字泵压力控制、压力流量复合控制及压力流量功率复合控制静动态性能进行仿真和分析。第五章,介绍了数字泵试验系统的原理,对数字泵压力控制、压力流量复合控制及压力流量功率复合控制的静态性能进行了试验验证。第六章,总结了论文的主要研究内容,指出了下一步的研究方向。
[Abstract]:The object of this thesis is variable control method and characteristic of axial piston pump. Based on the research of some common variable control methods, digital variable control of axial piston pump based on PWM high speed switch valve is proposed. The simulation models of mechanical hydraulic pressure control pump, mechanical liquid pressure flow compound control pump, mechanical hydraulic pressure flow power compound control pump and large displacement closed axial piston pump are built and analyzed. On the basis of this, the paper further builds the joint simulation model of digital axial piston pump (this paper is referred to as digital pump), and combines simulation with experiment to realize and verify the pressure control of digital pump. There are three control functions: pressure flow combined control and pressure flow power compound control. For the first time, LabVIEW and AMESim are used to establish the joint simulation model of digital pump, and on the basis of this model, the pressure of digital pump is controlled. The static performance of three control forms, pressure flow control and pressure flow power composite control, is simulated and analyzed. At the same time, the dynamic performance of pressure control, flow control and power control are simulated and analyzed. Finally, through the static performance test of digital pump, the functions of pressure control, pressure flow compound control and pressure flow power compound control are verified. The main contents of this paper are as follows: in Chapter 1, the variable control of axial piston pump is introduced. The research results of variable control at home and abroad are investigated, the research ideas and contents of this subject are determined, and the research difficulties are pointed out. In the second chapter, the working principle and static and dynamic performance of several common variable control pumps are introduced in detail. Finally, the static or dynamic performance of these variables is simulated and analyzed. In the third chapter, the relationship between the three control forms of digital pump and the hydraulic pressure control pump, the pressure flow compound control pump and the pressure flow power compound control pump is introduced. On this basis, the digital pump is divided into several parts to model. There are three models of high-speed on-off valve and three control modules. Finally, the establishment of digital pump joint simulation model is introduced. In chapter 4, the static and dynamic performance of digital pump pressure control, pressure flow compound control and pressure flow power compound control are simulated and analyzed. In chapter 5, the principle of digital pump test system is introduced, and the static performance of digital pump pressure control, pressure flow compound control and pressure flow power compound control are tested and verified. The sixth chapter summarizes the main research contents and points out the next research direction.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH322

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