液压缸阀泵协同控制方法试验研究
摘 要
液压伺服控制系统一般有两种控制方式:泵控和阀控。泵控,又称为容积控制,用伺服变量泵给执行机构供油,通过改变泵的排量从而改变进入执行机构的流量,调节输出速度。这种方式效率高,但是动态响应差。阀控,又称为节流控制,通过伺服阀控制进入执行机构的流量,改变执行机构速度。这种方式效率低,但是动态性能好。为了实现系统的动态性能好,又能满足系统高效率的要求。将两种调速方式结合起来,实现联合控制,是满足要求的一个重要研究方向。根据阀控与泵控联合工作形式，阀-泵联合控制系统分为串联型和并联型。
本次设计针对液压实验台中的几种典型基本回路，利用SolidWorks软件对各种液压元件进行了三维造型设计，并通过SolidWorks中强大的的装配功能组装成可以仿真运动的模拟实验台。此液压仿真实验台可通过更换不同的液压元件来实现多种液压基本回路的仿真模拟运动，从而达到不同的实验目的，从而能使学生更深刻的了解到液压传动的基本工作原理。
关键词：叶片泵，液压缸，溢流阀，手动换向阀，仿真模拟运动
Abstract
There are two kinds of control methods of hydraulic servo control system: pump control and valve control. Pump control, also known as volume control, servo variable pump to the actuator oil supply, by changing the displacement of the pump to change the flow into the actuator, regulating the output speed. This method is efficient, but the dynamic response is poor. Valve control, also known as throttle control, through the servo valve to control the flow into the actuator, changing the speed of the actuator. This method is low efficiency, but good dynamic performance. In order to realize the dynamic performance of the system, it can meet the requirement of high efficiency. It is an important research direction to meet the requirements by combining the two kinds of speed regulation. According to the combination of valve control and pump control, the valve pump control system can be divided into series and parallel type.
This design for several typical hydraulic basic circuit experiment, the various hydraulic components of a three-dimensional modeling design using SolidWorks software, and through the assembly function of SolidWorks in the powerful assembly can simulate experiment platform motion simulation. The hydraulic experiment by changing the hydraulic components to achieve a variety of different simulation basic hydraulic circuit simulation exercise, so as to achieve the purpose of the experiment is different, the basic working principle which can make students have a more profound understanding to the hydraulic transmission.
Key words: vane pump, hydraulic cylinder, relief valve, manual valve, simulation movement
目录
摘 要 I
1 简 介 4
1.1液压传动 4
1.2液压实验台 4
2 总方案设计 6
2. 1液压基本回路的拟定 6
2. 2液压实验台的三维效果图 7
3 液压元件的建模 8
3.1叶片泵 8
3.2液压缸的建模 11
3.3溢流阀的建模 12
3.5液压辅助元件的建模 16
3.5.1压力表的三维建模 17
4液压缸阀泵协同控制方法试验研究 20
4.1缸-阀-泵协同串联控制系统： 20
4.2缸-阀-泵协同并联控制系统： 20
5 结 论 23
致 谢 24
参考文献 25
参考文献
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