航天推进技术研究院主办
[1]董 蒙,谭永华,梁俊龙,等.轴向柱塞泵脉动特性仿真分析[J].火箭推进,2020,46(05):27-34.
DONG Meng,TAN Yonghua,LIANG Junlong,et al.Simulation analysis of pulsation characteristics for axial piston pump[J].Journal of Rocket Propulsion,2020,46(05):27-34.
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DONG Meng,TAN Yonghua,LIANG Junlong,et al.Simulation analysis of pulsation characteristics for axial piston pump[J].Journal of Rocket Propulsion,2020,46(05):27-34.
轴向柱塞泵脉动特性仿真分析
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
46
期数:
2020年05期
页码:
27-34
栏目:
研究与设计
出版日期:
2020-10-20
- Title:
- Simulation analysis of pulsation characteristics for axial piston pump
- 文章编号:
- 1672-9374(2020)05-0027-08
- Keywords:
- axial piston pump; pulsation characteristics; mathematical model; simulation model; AMESim; MATLAB
- 分类号:
- TH137
- 文献标志码:
- A
- 摘要:
- 针对轴向柱塞泵脉动特性分析问题,建立了其数学及仿真模型,并根据仿真结果对脉动特性进行分析。首先建立缸体惯量、柱塞运动、柱塞腔及配油盘面积子模型,组合形成柱塞泵整体数学模型。其次考虑流体属性变化及漏油因素,通过AMESim的HCD库构建超级元件形成柱塞泵仿真模型; 考虑流体属性中体积模量与流量系数随压力变化,利用MATLAB代码将数学模型转换为仿真模型。仿真结果基本一致,说明漏油及其他因素对仿真结果影响较小。此外,仿真结果表明,泵压力与流量脉动振型相位一致,泵出口压力大小与脉动幅值随转速与斜盘倾角增加而增加,脉动频率只随转速增加,不受斜盘倾角影响。通过仿真与试验数据对比,两者脉动幅值包络误差2.1%,验证了模型的正确性,两种仿真方式为柱塞泵的建模提供不同途径。
- Abstract:
- Aiming at analyzing the pulsation characteristics of axial piston pump, its mathematical and simulation models were established, and the pulsation characteristics were analyzed according to the simulation results.Firstly, the sub-models of cylinder inertia, piston motion, piston chamber and overflow area of oil plate were established to form the overall mathematical model of pump.Next, considering the change of fluid properties and the oil leakage factors, the simulation model of piston pump was built by HCD library of AMESim. Besides considering the change of bulk modulus and flow coefficient with pressure in fluid properties, the mathematical model was converted into a simulation model by MATLAB program.The simulation results of two methods are basically the same, indicating that the oil leakage and other factors have a small effect on the simulation results.In addition, the simulation results show that the pressure pulsation mode is consistent with the flow, and the pump outlet pressure and the pulsation amplitude increase with the rotation speed and the swash plate inclination angle, while the pulsation frequency only increase with the rotation speed and is not affected by the inclination angle of swashplate.Finally, the model is verified by comparing the simulation and test data and the pulse amplitude envelope error is 2.1%.The two simulation methods provide different approaches for the modeling of piston pump.
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备注/Memo
收稿日期:2019-10-28; 修回日期:2019-12-04
作者简介:董蒙(1993—),女,博士,研究领域为液体火箭发动机系统
更新日期/Last Update:
2020-10-20