轴向柱塞泵
回流
活塞泵
径向柱塞泵
活塞(光学)
变量泵
机械
往复泵
螺杆泵
液压泵
水力机械
功率(物理)
材料科学
机械工程
工程类
控制理论(社会学)
热力学
物理
计算机科学
光学
控制(管理)
波前
人工智能
入口
作者
Zhonglin Sun,Qingliang Zeng,Lirong Wan,Hanzheng Dai
出处
期刊:Machines
[MDPI AG]
日期:2022-05-25
卷期号:10 (6): 411-411
被引量:4
标识
DOI:10.3390/machines10060411
摘要
The periodic flow and pressure pulsation of the axial piston pump can lead to periodic vibration, noise, and even damage to various components in the hydraulic system. Therefore, the dynamic characteristics analysis of the axial piston pump in the hydraulic system is of great significance for reducing vibration and noise in the hydraulic system and improving efficiency. The double-compound axial piston pump is the key component of a high power and large flow hydraulic power system, which has a special power control mode. In this paper, the working and control principles of the double-compound axial piston pump are analyzed, the numerical model of the double-compound axial piston pump is established, and the effectiveness of the model is verified through experimental tests. The constant power control characteristics of the double-compound axial piston pump under different power settings and the variable power control characteristics under the rated load pressure are analyzed. By analyzing the dynamic characteristics of the double-compound axial piston pump, the influence of different working conditions on the dynamic characteristics is investigated. The results show that the output efficiency of the double-compound axial piston pump is higher when the output flow is larger. When the piston chamber works in the closed pre-compression pressure zone and the closed pre-release pressure zone, oil backflow occurs. The oil backflow in the piston chamber seriously intensifies the outlet flow pulsation of the double-compound axial piston pump. The flow pulsation rate is positively correlated with load pressure and power control pilot pressure, while negatively correlated with spindle speed. The paper provides a basis for the analysis and optimization of power control, flow pulsation, fluid vibration, and noise of the double-compound axial piston pump.
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