变排量非对称轴向柱塞泵特性仿真分析及试验

doi:10.3901/JME.2018.14.215

机械工程学报 ›› 2018, Vol. 54 ›› Issue (14): 215-224.doi: 10.3901/JME.2018.14.215

变排量非对称轴向柱塞泵特性仿真分析及试验

高有山^1,2, 成杰¹, 黄家海², 权龙²

1. 太原科技大学机械工程学院太原 030024;
2. 太原理工大学新型传感器与智能控制教育部与山西重点实验室太原 030024

收稿日期:2017-10-22 修回日期:2018-03-12 出版日期:2018-07-20 发布日期:2018-07-20
通讯作者: 黄家海(通信作者),男,1979年出生,博士,副教授。主要从事流体传动及控制研究。E-mail:huangjiahai@tyut.edu.cn
作者简介:高有山,男,1974年出生,博士,教授。主要研究方向为液压传动及车辆节能技术。E-mail:gaoyoushan@tyust.edu.cn;成杰,1989年出生,硕士研究生。主要研究方向为液压传动与控制。E-mail:334961125@qq.com;权龙,男,1959年出生,教授,博士研究生导师。主要研究方向为电液伺服及比例控制技术。E-mail:quanlong@tyut.edu.cn
基金资助:
国家自然科学基金（51375324）、山西省专利推广实施资助专项（2017006，20051002）、山西省自然科学基金（2015011059）和研究生科技创新项目（20151021）资助项目。

Simulation Analysis and Test of Variable-displacement Asymmetric Axial Piston Pump

GAO Youshan^1,2, CHENG Jie¹, HUANG Jiahai², QUAN Long²

1. School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024;
2. Key Laboratory of Advance Transducers and Intelligent Control System, Ministry of Education, School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024

Received:2017-10-22 Revised:2018-03-12 Online:2018-07-20 Published:2018-07-20

摘要/Abstract

摘要： 直接泵控系统比阀控系统具有很大节能优势和应用前景，但泵控差动缸现有技术都不理想，采用非对称泵平衡差动缸不对称流量是一种有效的解决方案。基于非对称定量泵，提出一种非对称变量泵VAPP （Variable-displacement asymmetric axial piston pump）。采用伺服比例阀和与斜盘固定连接的角位移传感器组成闭环控制方式对VAPP斜盘倾角进行控制，实现VAPP的变量输出。仿真和试验表明，VAPP通过变量机构控制斜盘倾角，B口和T口的油液流量均随着斜盘角度的增大而增大，响应速度也加快。当出油口有工作压力，其流量脉动随着斜盘倾角的增大明显减小，但柱塞腔压力依旧随着斜盘倾角的增大而增大。当配流窗口B、T加载压力相等时，B口的流量脉动周期比T口的长，流量波峰比T口波峰高；T口流量脉动比B口流量脉动大，T口应该连接在低压油箱或者蓄能器上，以免影响VAPP的性能。

关键词: 变排量, 仿真分析, 非对称泵, 流量脉动, 压力波动

Abstract: The variable displacement control has a great energy-saving advantages and application prospects than that valve control. But variable displacement control differential cylinder is not ideal for existing technologies. Using asymmetric pump-controlled asymmetric cylinder strategy to balance the unequal volumetric flow through a single rod cylinder in closed-circuit is an effective method. However, the asymmetric axial piston pump had been presented is fixed displacement. In this paper, variable-displacement asymmetric axial piston pumps (VAPP) is researched. The VAPP variable-displacement output is implemented by controlled the swash plate angle with angle feedback control loop, which is composed through servo proportional valve and angular displacement sensor fixed to connected to the swash plate. Experiments are carried to verify theoretical results. Both the simulation and Experiments results showed that Swash plate angle is controlled by variable mechanism; when swash plate angle increased, oil flow of port B and T are increased and response speed accelerate also. When the discharge ports have load pressure, the flow ripple significantly reduced with the increase of swash plate angle, but the cylinder pressure still increases with the increase of swash plate Angle. The flow ripple cycle of port B is longer than that port T and peak flow is higher than that port T when port B load pressure equals to port T. At same time port T should connection to the low pressure sides or oil tank, to avoid affecting the performance of VAPP.

Key words: asymmetric axial piston pump, flow ripple, pressure fluctuation, simulation analysis, variable-displacement

中图分类号:

TH137

高有山, 成杰, 黄家海, 权龙. 变排量非对称轴向柱塞泵特性仿真分析及试验[J]. 机械工程学报, 2018, 54(14): 215-224.

GAO Youshan, CHENG Jie, HUANG Jiahai, QUAN Long. Simulation Analysis and Test of Variable-displacement Asymmetric Axial Piston Pump[J]. Journal of Mechanical Engineering, 2018, 54(14): 215-224.

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变排量非对称轴向柱塞泵特性仿真分析及试验

Simulation Analysis and Test of Variable-displacement Asymmetric Axial Piston Pump

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