V型槽导电滑环接触特性及影响因素分析  

Analysis of Contact Characteristics and Influencing Factors for V-groove Conductive Slip Ring

作　　者：窦德龙 李亮[2,3] 牛文韬 王红伟 石星烨[1,2] 周晓俊 DOU Delong;LI Liang;NIU Wentao;WANG Hongwei;SHI Xingye;ZHOU Xiaojun(National Key Laboratory of Inertial Measurement,Beijing 100191;Beijing Institute of Aerospace Control Devices,Beijing 100039;School of Mechanical Engineering and Automation,Beihang University,Beijing 100191)

机构地区：[1]惯性测量全国重点实验室,北京100191 [2]北京航天控制仪器研究所,北京100039 [3]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《导航与控制》2025年第1期118-126,98,共10页Navigation and Control

基　　金：基础研究项目(编号:514010208-103)。

摘　　要：导电滑环由滑环-刷丝接触实现动力和信号传输,滑环-刷丝接触力及接触应力会影响导电滑环的可靠性和使用寿命。为研究V型槽滑环装配偏差和刷丝成型及回弹对滑环-刷丝接触特性的影响,采用有限元方法模拟了滑环-刷丝的装配过程,分析了不同滑环装配倾斜角、旋转角、中心距和偏移距以及刷丝开口距离下接触力和接触应力的变化规律,并通过振动试验测试了滑环-刷丝的接触电阻。试验结果表明,滑环装配倾斜角和旋转角对接触位置和接触应力作用明显,滑环装配中心距、偏移距和刷丝开口距离对接触力影响较大,当刷丝开口距离调整至2.5 mm时,接触力为0.0518 N,同时可控制接触电阻波动小于100 mΩ。The conductive slip ring transmits power and signal through the contact between slip ring and brush wire,and its reliability and service life depend on the contact force and contact stress.In order to explore the contact characteristics of slip ring-brush wire under the installation deviation of V-groove slip ring and the molding and springback of brush wire,finite element method is used to simulate the assembly process of slip ring-brush wire.The variation law of contact force and contact stress under different slip ring installation inclination angles,rotation angles,center distances and offset distances,as well as brush wire opening distances are analyzed.In addition,the contact resistance of slip ring-brush wire is measured by vibration test.The test results show that the inclination angle and rotation angle have a significant impact on the contact position and contact stress,while the installation center distance,offset distance,and the brush wire opening distance have a more significant impact on contact force.When the brush wire opening distance is adjusted to 2.5 mm,the contact force is 0.0518 N,and the fluctuation of contact resistance can be controlled less than 100 mΩ.

关 键 词：导电滑环 滑环-刷丝 接触特性 装配偏差 成型及回弹 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]