柱塞泵马达高压油路压力脉动耦合特性  

Coupling Characteristics of Pressure Pulsation in the High-pressure Oil Circuit of Piston Pump-motor System

作　　者：汪浒江 毛明 林宇 毛飞鸿 王涛[4] 唐守生[4] 包倩倩 WANG Hujiang;MAO Ming;LIN Yu;MAO Feihong;WANG Tao;TANG Shousheng;BAO Qianqian(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Chinese Scholartree Ridge State Key Laboratory,Beijing 100072,China;College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;Transmission System Technology Department,China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]先进越野系统技术全国重点实验室,北京100072 [3]太原理工大学机械与运载工程学院,山西太原030024 [4]中国北方车辆研究所传动系统技术部,北京100072

出　　处：《兵工学报》2024年第11期3781-3791,共11页Acta Armamentarii

基　　金：先进越野系统技术全国重点实验室稳定支持项目(KD005(2023)-18)。

摘　　要：柱塞泵马达系统高压油路存在固有的压力脉动现象,其激发振动和噪音,恶化动力传递的平稳性,严重影响系统的可靠性和寿命。以往的研究主要聚焦于高压柱塞泵的压力脉动,而对柱塞泵马达系统高压油路的压力脉动耦合特性缺少研究。针对以上问题,通过揭示柱塞泵马达系统高压油路压力脉动的耦合机理及耦合特征,提出柱塞泵马达系统高压油路压力脉动解耦新方法。利用解耦新方法研究发现,泵源激励是贡献柱塞泵马达系统高压油路压力脉动的主要根源。对于所研究的联体设计的泵马达,在泵满排量状态下,泵源激励对高压脉动的平均贡献占比高达72%,而马达贡献占比仅为28%。新方法及所得到的新结论加深了对柱塞泵马达系统高压油路压力脉动耦合特性的认识,为进一步抑制和利用柱塞泵马达系统高压油路的压力脉动现象提供了理论支撑。There is inherent pressure pulsation in the high-pressure oil circuit of piston pump-motor system,which causes vibration and noise,and worsens the smoothness of power transmission,thus having serious effect on the reliability and life of the system.Previous studies have focused on the pressure pulsation in high-pressure piston pumps.However,there is a lack of research on the coupling characteristics of pressure pulsation in the high-pressure oil circuit of piston pump-motor system.To address the above problems,the coupling mechanism and characteristics of the pressure pulsation in the high-pressure oil circuit of piston pump-motor system are revealed,and a new method of decoupling the pressure pulsation in the high-pressure oil circuit of piston pump-motor system is proposed.The pump source excitation is found to be the primary source of pressure pulsation in the high-pressure oil circuit of piston pump-motor system by using the proposed decoupling method.For the coupled pump motor in the paper,the average contribution of pump source excitation to the pressure pulsation is as high as 72%when the pump is at full displacement,while the contribution of motor to the pressure pulsation is only 28%.The proposed method and the conclusions drawn deepen the understanding of the coupling characteristics of pressure pulsation in the high-pressure oil circuit of piston pump-motor system.This provides theoretical support for the further suppression and utilization of the pressure pulsation in the high-pressure oil circuit of piston pump-motor system.

关 键 词：柱塞泵马达 压力脉动 耦合特性 频谱结构 信号解耦算法 

分 类 号：TH137[机械工程—机械制造及自动化]