水泵转子径向圆跳动检测数据修正
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摘要
针对应用千分表和电涡流传感器进行水泵转子径向圆跳动检测时,检测结果出现正弦变化规律的现象,分析了安装偏心误差对检测结果的影响原理,建立了相应的数学模型.运用最小二乘拟合法计算出变化曲线的幅值及初相位,从而消除偏心误差实现误差分离.结果表明,当将所提方法应用在水泵转子径向圆跳动检测的工程实践中时,可以有效消除安装偏心引起的误差,从而提高检测精确度.拟合平方和误差约为0. 000 9,所提方法可以广泛应用于轴类工件的检测实践.
Aiming at the sinusoidal variation phenomenon of detected results when the dial indicator and eddy current sensor are used to detect the radial circle runout of water pump rotor,the influence principle of installation eccentric error on the detection result was analyzed,and the corresponding mathematical model was established. In order to eliminate the eccentric error and realize the error separation,the amplitude and initial phase of change curves were calculated with the least square fitting method. The results show that when the proposed method was used in the engineering practice of radial runout detection of pump rotor,the error caused by the installation eccentricity can be effectively eliminated,and the detection accuracy can be improved. The error of fitting square sum is about 0. 000 9,and the proposed method can be widely used in the detection of shaft workpieces.
Aiming at the sinusoidal variation phenomenon of detected results when the dial indicator and eddy current sensor are used to detect the radial circle runout of water pump rotor,the influence principle of installation eccentric error on the detection result was analyzed,and the corresponding mathematical model was established. In order to eliminate the eccentric error and realize the error separation,the amplitude and initial phase of change curves were calculated with the least square fitting method. The results show that when the proposed method was used in the engineering practice of radial runout detection of pump rotor,the error caused by the installation eccentricity can be effectively eliminated,and the detection accuracy can be improved. The error of fitting square sum is about 0. 000 9,and the proposed method can be widely used in the detection of shaft workpieces.
引文
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[8]高加琼,魏霖静.基于最小二乘及分类向量机的空气调节器故障检测[J].沈阳工业大学学报,2016,38(3):326-330.(GAO Jia-qiong,WEI Lin-jing.Fault detection of air conditioner based on least squares and support vector machine classification[J].Journal of Shenyang University of Technology,2016,38(3):326-330.)
[9]刘忠夫,王振宏.回转主轴垂直度及安装偏心对轮毂跳动检测的影响分析[J].长春理工大学学报(自然科学版),2016,39(2):35-38.(LIU Zhong-fu,WANG Zhen-hong.Analysis on effect of rotary axis perpendicular and installation eccentric to the wheel hub runout detection[J].Journal of Changchun University of Science and Technology(Natural Science Edition),2016,39(2):35-38.)
[10]颜华,李欣,王善辉.基于最小二乘法和克里金插值的三维温度场重建[J].沈阳工业大学学报,2014,36(3):303-307.(YAN Hua,LI Xin,WANG Shan-hui.Reconstruction of three-dimensional temperature field based on least square method and Kriging interpolation[J].Journal of Shenyang University of Technology,2014,36(3):303-307.)
[2]赖海鸣,林载誉,杨将新,等.大型轴类电跳动在位测量系统[J].汽轮机技术,2014,56(3):234-236.(LAI Hai-ming,LIN Zai-yu,YANG Jiang-xin,et al.Large shaft electrical runout on-machine measuring system[J].Turbine Technology,2014,56(3):234-236.)
[3]陈虹,朱颖.高速旋转主轴径向跳动非接触测量[J].机电工程技术,2013,42(1):72-75.(CHEN Hong,ZHU Ying.High-speed rotating spindle non-contact measurement radial direction runout value of research[J].Mechanical and Electrical Engineering,2013,42(1):72-75.)
[4]杨刚.高速电主轴径向跳动及静刚度测试方法[J].重庆理工大学学报,2013,27(2):62-68.(YANG Gang.Research of high-speed electronic spindle radius run-out and static stiffness[J].Journal of Chongqing University of Technology,2013,27(2):62-68.)
[5]茅健,陈小龙,林载誉,等.轴类零件电跳动在位测量方法[J].农业机械学报,2014,45(5):310-314.(MAO Jian,CHEN Xiao-long,LIN Zai-yu,et al.Onsite measuring method for electrical runout on main shaft[J].Transactions of the Chinese Society for Agricultural Machinery,2014,45(5):310-314.)
[6]宋起,单东日.大型轴类工件径向圆跳动非接触检测方法的研究[J].组合机床与自动化加工技术,2015(8):74-78.(SONG Qi,SHAN Dong-ri.Research on non-contact measurement method of the radial circular run-out error of the large-size axes[J].Modular Machine Tool&Automatic Manufacturing Technique,2015(8):74-78.)
[7]Li J S,Yu Y J,Xue Y J.Forecast for radial runout of outer ring in cylindrical roller bearing[J].Procedia CIRP,2017,62:375-379.
[8]高加琼,魏霖静.基于最小二乘及分类向量机的空气调节器故障检测[J].沈阳工业大学学报,2016,38(3):326-330.(GAO Jia-qiong,WEI Lin-jing.Fault detection of air conditioner based on least squares and support vector machine classification[J].Journal of Shenyang University of Technology,2016,38(3):326-330.)
[9]刘忠夫,王振宏.回转主轴垂直度及安装偏心对轮毂跳动检测的影响分析[J].长春理工大学学报(自然科学版),2016,39(2):35-38.(LIU Zhong-fu,WANG Zhen-hong.Analysis on effect of rotary axis perpendicular and installation eccentric to the wheel hub runout detection[J].Journal of Changchun University of Science and Technology(Natural Science Edition),2016,39(2):35-38.)
[10]颜华,李欣,王善辉.基于最小二乘法和克里金插值的三维温度场重建[J].沈阳工业大学学报,2014,36(3):303-307.(YAN Hua,LI Xin,WANG Shan-hui.Reconstruction of three-dimensional temperature field based on least square method and Kriging interpolation[J].Journal of Shenyang University of Technology,2014,36(3):303-307.)