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首页> 《中国测试》期刊 >本期导读>多微通道式气体静压节流器阶跃响应特性的测试研究

多微通道式气体静压节流器阶跃响应特性的测试研究

311    2021-02-07

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作者:曹鹏飞, 禹静, 尹健龙, 沈小燕, 李东升

作者单位:中国计量大学计量测试工程学院,浙江 杭州 310018


关键词:气体静压节流器;多微通道式;阶跃响应测试;动静态特性


摘要:

针对采用外部激励法研究气体静压节流器的响应特性时存在实验设计复杂、动态参数难以计算等问题,设计新的阶跃响应测试来分析气体静压节流器的动静态特性。采用多微通道式气体静压节流器作为研究对象,设计测试方案对空载时的多微通道式气体静压节流器在垂直方向上的阶跃响应进行测量,通过时域分析法分析其性能参数。测试结果表明:多微通道式气体静压节流器-气膜系统为二阶系统,且阻尼振荡频率随着输入气压的增大而增大;根据节流器-气膜系统的动力学模型和阶跃响应函数,进一步得到气膜的阻尼系数和静刚度,且其阻尼系数和静刚度随输入气压的增大而增大。该阶跃响应测试方法能有效分析多微通道式气体静压节流器的固有频率、阻尼比等性能参数,对节流器结构的设计起指导作用。


Research on step response characteristics of multi-microchannel aerostatic restrictor
CAO Pengfei, YU Jing, YIN Jianlong, SHEN Xiaoyan, LI Dongsheng
College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou 310018, China
Abstract: When the external excitation method is used to study the response characteristics of aerostatic restrictor, there are problems such as complicated experimental design and difficult calculation of dynamic parameters, so a new step response test is designed to analyze the dynamic and static characteristics of aerostatic restrictor. Using multi-microchannel aerostatic restrictor as the research object, and designing the test plan to measure the step response of multi-microchannel aerostatic restrictor in the vertical direction at no load, and using time domain analysis method to analyze its performance parameters. The test results showed: multi-microchannel aerostatic restrictor-gas film system was a second-order system, and the damping oscillation frequency increased with the increase of the input gas pressure; Through the dynamic model and step response function of the restrictor-gas film system, the damping coefficient and static stiffness of the gas film were further obtained, and the damping coefficient and static stiffness increased with the increase of the input gas pressure. This step response test method can effectively analyze the natural frequency, damping ratio and other performance parameters of the multi-microchannel gas static pressure restrictor, and can guide the design of the restrictor structure.
Keywords: aerostatic restrictor;multi-microchannel;step response test;dynamic and static characteristics
2021, 47(2):156-163  收稿日期: 2020-05-26;收到修改稿日期: 2020-06-28
基金项目: 国家自然科学基金(51775529);浙江省自然科学基金(LY19E050002)
作者简介: 曹鹏飞(1994-),男,浙江杭州市人,硕士研究生,专业方向为超精密测量技术
参考文献
[1] ZHANG Y F, HEI D, LU Y J, et al. Bifurcation and chaos analysis of nonlinear rotor system with axial-grooved gas-lubricated journal bearing support[J]. Chinese Journal of Mechanical Engineering, 2014, 27(2): 358-368
[2] 崔海龙, 岳晓斌, 张连新, 等. 基于数值模拟的小孔节流空气静压轴承静动态特性研究[J]. 机械工程学报, 2016, 52(9): 116-121
[3] GAO Q, CHEN W Q, LU L H, et al. Aerostatic bearings design and analysis with the application to precision engineering: State-of-the-art and future perspectives[J]. Tribology International, 2019: 135-151
[4] 赵晓龙, 张君安, 董皓, 等. 变截面节流器对空气静压轴承承载性能的影响[J]. 光学精密工程, 2018, 26(10): 2446-2454
[5] 张雯, 尹健龙, 张玉冰, 等. 多微通道式气体静压节流器承载力研究[J]. 机械工程学报, 2012, 48(20): 138-144
[6] BELFORTE G, COLOMBO F, RAPARELLI T, et al. Comparison between grooved and plane aerostatic thrust bearings: static performance[J]. Meccanica, 2011, 46(3): 547-555
[7] 汲腾龙, 宋鹏云, 于贺春. 狭缝节流动静压气体径向滑动轴承性能研究[J]. 润滑与密封, 2019, 44(9): 70-76
[8] 于普良, 胡江山, 李双, 等. 新型径向槽结构静压气体轴承静态特性研究[J]. 润滑与密封, 2019, 44(4): 14-19
[9] AKHOND M, VAHDATI M. Study of variable depth air pockets on air spindle vibrations in ultra-precision machine tools[J]. The International Journal of Advanced Manufacturing Technology, 2014, 73(5/8): 681-686
[10] 龙威, 王继尧, 李法社, 等. 空气静压止推轴承自激微振动数值分析及实验研究[J]. 振动与冲击, 2019, 38(16): 224-232
[11] 李步博. 基于样本熵和SVM的滚动轴承故障诊断方法研究究[D]. 哈尔滨: 哈尔滨工业大学, 2018.
[12] 李加福, 崔廷, 李东升, 等. 基于阻抗模型的气体静压节流器承载力研究[J]. 组合机床与自动化加工技术, 2014(5): 31-34
[13] 王余奎,朱倩,张磊, 等.LCD谱熵及其在滚动轴承退化状态识别中的应用[J].中国测试,2020,46(3):135-142.
[14] COLOMBO F, LENTINI L, RAPARELLI T, et al. Dynamic characterisation of rectangular aerostatic pads with multiple inherent orifices[J]. Tribology Letters, 2018, 66(4): 512-521
[15] 赵磊,张永祥,朱丹宸.复杂装备滚动轴承的故障诊断与预测方法研究综述[J].中国测试,2020,46(3):17-25.