微型高速轴向柱塞泵动力学特性分析  

Dynamic Characteristics Analysis of a Micro High-speed Axial Piston Pump

作　　者：叶绍干 李旭[1] 侯亮[1] 卜祥建[1] 赵守军 刘会祥[3] YE Shao-gan;LI Xu;HOU Liang;BU Xiang-jian;ZHAO Shou-jun;LIU Hui-xiang(Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen, Fujian 361021;State Key Laboratory of Fluid Power & Mechatronic Systems, Zhejiang University, Hangzhou, Zhejiang 310027;Beijing Institute of Precision Mechatronics and Controls, Beijing 100076)

机构地区：[1]厦门大学机电工程系,福建厦门361021 [2]浙江大学流体动力与机电系统国家重点实验室,浙江杭州310027 [3]北京精密机电控制设备研究所,北京100076

出　　处：《液压与气动》2021年第10期8-15,共8页Chinese Hydraulics & Pneumatics

基　　金：国家重点研发计划(2019YFB2005101,2018YFB2001101);流体动力与机电系统国家重点实验室开放基金(GZKF-201903,GZKF-202013);厦门市重大科技项目(3502Z20191019)。

摘　　要：微型高速轴向柱塞泵动力学特性影响其工作性能和寿命,主轴与缸体的振动响应以及质心轨迹可反映其动力学特性。对微型高速轴向柱塞泵结构进行合理简化,建立了其运行工况下的动力学模型。分析了工况压力21 MPa,转速分别为18000,20000,23000 r/min时,主轴与缸体的振动位移频谱、倾覆角度频谱和质心轨迹;分析了工况转速20000 r/min,压力分别为14,21,28 MPa时,主轴与缸体的振动位移频谱、倾覆角度频谱和质心轨迹。研究结果表明:振动位移需关注偶倍频,倾覆角度需关注奇倍频,部分谐波振动响应随压力的增大而增大,主轴与缸体的质心轨迹呈扇叶形状。The dynamic characteristics of micro high-speed axial piston pump affect the performance and life,vibration response and centroid trajectory of the shaft and cylinder can reflect the dynamic characteristics.Based on the simplified micro high-speed axial piston pump structure,the dynamic model is established under the operation condition.Vibration displacement spectrum,overturning angle spectrum and centroid trajectory of the shaft and cylinder are analyzed when working pressure is 21 MPa and rotating speeds are 18000,20000,23000 r/min respectively;vibration displacement spectrum,overturning angle spectrum and centroid trajectory of the shaft and cylinder are analyzed when rotating speed is 20000 r/min and pressures are 14,21,28 MPa respectively.The results show that the vibration displacement is more related with the even harmonics,the overturning angle is more related with the odd harmonics,and some harmonic responses of vibration increase with the pressure rises,the centroid trajectory of shaft and cylinder is in the shape of a fan blade.

关 键 词：微型高速轴向柱塞泵 动力学模型 振动响应 质心轨迹 

分 类 号：TH137[机械工程—机械制造及自动化]