基于PM流量控制器的双锥液体静压轴承静动态特性分析  

Study on Static and Dynamic Characteristics of Bi-cone Hydrostatic Bearing for PM Flow Controller

作　　者：洪姗姗 刘文志 侯亮 陈云 吕鹤 陈洪 HONG Shan-shan;LIU Wen-zhi;HOU Liang;CHEN Yun;LV He;CHEN Hong(Pen-Tung Sah Institute of Micro-Nano Science and Technology,Xiamen University,Xiamen,Fujian 361005;Haixi(Fujian)Institute,China Academy of Machinery Science and Technology Group,Sanming,Fujian 365050)

机构地区：[1]厦门大学萨本栋微米纳米科学技术研究院,福建厦门361005 [2]中国机械总院集团海西(福建)分院有限公司,福建三明365050

出　　处：《液压与气动》2023年第12期25-33,共9页Chinese Hydraulics & Pneumatics

基　　金：国家自然科学基金面上项目(51975495);福建省科技创新平台项目(2022-P-022)。

摘　　要：基于PM流量控制器的双锥轴承结构可在较小尺寸下同时承受轴向力和径向力,承载性能更大,且外置节流器的方式结构简单,易于调节性能,降低回转误差。设计了基于PM控制器的双锥轴承,建立轴承平均分布五油腔的静动态特性模型,分析了轴承设计与节流器主要参数对承载能力的影响规律。研究表明,轴承总刚度、承载力与锥半角呈递增关系,轴向刚度、承载力递增更显著,但径向变化不大;增大供油压力、减小初始液阻比,可提高油膜刚度与承载力;增加节流器的比流量与初始流量,减小供油压力,可缩短过渡时间,提高动态性能。根据设计指标匹配轴承和节流器的关键参数,可在同等条件下实现轴承性能优化。The bi-cone bearing structure based on PM flow controller can withstand both axial and radial loads,with greater bearing performance.Additionally,the external PM flow controller has a simple structure,making it easy to adjus performance and improve rotational accuracy.This article designs a bi-cone bearing based on PM controller,establishes static and dynamic characteristic models with an five-oil cavities,and analyzes the influence of bearing structure and main parameters of the restrictor.The results show that the total bearing capacity show a gradual increase in relation to the cone half angle,with more significant increases in axial capacity,but little radial variation;Increasing the fuel supply pressure,decreasing the initial liquid resistance ratio can improve the bearing capacity;Increasing the initial and specific flow rates of the restrictor,reducing the fuel supply pressure can shorten the transition time and improve the dynamic performance.According to the design indexes,match the parameters of the bearing and the PM controller,optimize the bearing load performance.

关 键 词：液体静压轴承 双锥结构 PM流量控制器 静动态特性 

分 类 号：TH137[机械工程—机械制造及自动化] TH133