基于有效奇异值数量规律的滑动轴承转子轴心轨迹提纯研究

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摘要针对实测的主轴位移信号存在噪声污染的问题，提出基于有效奇异值数量规律的轴心轨迹提纯方法，并将其应用于大型滑动轴承试验台转子的轴心轨迹提纯，效果优于传统算法(EMD、谐波小波)及其改进算法(基于EMD的改进谐波小波算法)，成功识别了转子的不对中故障。此外发现，当奇异值差分谱的首个峰值和紧随其后的差分谱幅值很接近(97.16%)时，根据差分谱方法提纯的轴心轨迹会发生畸变，并从能量损失的角度对这种现象进行了分析，指出，在这种情况下应该以第二个差分谱峰值对应的分量个数重构信号才能提纯到正确的轴心轨迹，从而进一步完善了差分谱理论。研究结果表明，利用改进的差分谱法的轴心轨迹提纯效果与本文提出的有效值法的效果相当。

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	郭明军1
	李伟光1
	杨期江2
	赵学智1

关键词 ：奇异值分解, 有效奇异值, 经验模式分解, 谐波小波, 轴心轨迹

Abstract：Aiming at the noise pollution of the measured displacement signals of a rotor, a method for axis trajectory purification was proposed based on the number rule of singular values. The effect of the method proposed was compared with that of the improved harmonic wavelet algorithm based on EMD. In addition, when the first peak of the difference spectrum of singular values be close to the next one, the signal should be purified using the components corresponding to the second peak. The results by the proposed method is equivalent to the one based on the theory of difference spectrum of singular values. Although the improved harmonic wavelet algorithm based on EMD can successfully identify the misalignment fault of the rotor, its effect is worse than that of the effective singular value method.

Key words： singular value decomposition effective singular values Empirical Mode Decomposition harmonic wavelet axis orbit;

收稿日期: 2019-03-11 出版日期: 2019-11-15

引用本文:

郭明军1，李伟光1，杨期江2，赵学智1. 基于有效奇异值数量规律的滑动轴承转子轴心轨迹提纯研究[J]. 振动与冲击, 2019, 38(22): 155-161.
GUO Mingjun1，LI Weiguang1，YANG Qijiang2，ZHAO Xuezhi1. Purification of the axis trajectory of a rotor supported by sliding bearings based on the number rule of effective singular values. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(22): 155-161.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I22/155

[1] 李伟光,郭明军，杨期江，等. 大型液体动压滑动轴承试验台系统设计[J]. 润滑与密封，2017，42(10):87-91.
LI Weiguang, GUO Ming-jun, YANG Qi-jiang, et al. Design of large liquid dynamic bearing test bed system [J]. Journal of Lubrication Engineering, 2017,42(10):87-91.
[2] 项春. 采用多通道数字滤波器的轴心轨迹提纯[J]. 水力发电, 2007, 33(3):60-62.
XIANG Chun. Purification of rotor center’s orbit with Muti-channel digital signal filters [J]. Journal of Water Power, 2007, 33(3):60-62.
[3] 李方，李友荣，王志刚. 应用广义谐波小波提纯转子轴心轨迹[J]. 振动、测试与诊断， 2008， 28(1):55-57.
LI Fang, LI You-rong, WANG Zhi-gang. Purification of axis orbit of rotor with generalized harmonic wavelet [J]. Journal of Vibration, Measurement&Diagnosis,2008, 28(1):55-57.
[4] 钱玉良，张浩，彭道刚，等. 基于EMD调制和粒子群模型的发电机组轴心轨迹提纯[J]. 信息与控制，2013，42(2):243-251.
QIAN Yu-liang, ZHANG Hao, PENG Zhi-gang, et al. Purifying the orbit of generator unit based on EMD modulation and a particle swarm model [J]. Journal of Information and Control, 2013, 42(2):243-251.
[5] 张文斌，周晓军，李俊生，等. 广义形态滤波器在轴心轨迹提纯中的应用[J]. 浙江大学学报(工学版) 2010， 44(5):893-896.
ZHANG Wen-bin, ZHOU Xiao-jun, LI Jun-sheng, et al. Purification of rotor center' s orbit based on generalized morphological filter [J]. Journal of Zhejiang University(Engineering Science) , 2010, 44(5):893-896.
[6] 尹爱军，孙丽萍，王见. 偏微分方程在轴心轨迹提纯的应用[J]. 重庆大学学报：自然科学版,2011， 34(12) :72-77.
YIN Ai-jun, SUN Li-ping, WANG Jian. Purification of the shaft centerline orbit with partial differential equation [J]. Journal of Chongqing University: Engineering Science, 2011, 34(12):72-77.
[7] Yang W X, Tse P W. Development of an advanced noise reduction method for vibration analysis based on singular value decomposition [J]. NDT&E International, 2003, 36(6):419-432.
[8] Kanjilal P P, Saha G . Fetal ECG extraction from single channel maternal ECG using SVD and SVR spectrum[C]// Engineering in Medicine & Biology Society, IEEE Conference. IEEE, 2002.
[9] 张永祥, 王孝霖, 张帅,等. 基于奇异值分解和相关峭度的滚动轴承故障诊断方法研究[J]. 振动与冲击, 2014, 33(11):167-171.
ZHANG Yong-xiang, WANG Xiao-lin, ZHANG Shuai, et al. Rolling element bearing fault diagnosis based on singular value decomposition and correlated kurtosis [J]. Journal of vibration and shock, 2014, 33(11):167-171.
[10] 赵学智，叶邦彦，陈统坚. 奇异值差分谱理论及其在车床主轴箱故障诊断中的应用[J]. 机械工程学报，2010,46(1):100-108.
ZHAO Xue-zhi, YE Bang-yan, CHEN Tong-jian. Difference spectrum theory of singular value and its application to the fault diagnosis of headstock of lathe [J]. Journal of Mechanical Engineering, 2010, 46(1):100-108.
[11] 张景润，李伟光，李振，赵学智. 基于奇异值差分谱理论的大型转子轴心轨迹提纯[J].振动与冲击，2019，38(4):199-205.
ZHANG Jing-run, LI Wei-guang, LI Zhen, et al. Purification a large rotor axis's based on the difference spectrum theory of singular value [J]. Journal of vibration and shock, 2019,38(4):199-205.
[12] 赵学智,叶邦彦.非零奇异值和频率的关系及其在信号分解中的应用[J].电子学报,2017,45(08):2008-2018.
ZHAO Xue-zhi, YE Bang-yan. The relationship between non-zero singular values and frequencies and its application to signal decomposition [J]. ACTA ELECTRONICA, 2017,45(08):2008-2018.
[13] Golub G H, Van Loan C F. Matrix computations (3rd ed.)[M]// Matrix computations. 3rd ed , 1996.
[14] 苏文胜, 王奉涛, 张志新,等. EMD降噪和谱峭度法在滚动轴承早期故障诊断中的应用[J]. 振动与冲击, 2010, 29(3):18-21.
SUN Wen-sheng, WANG Feng-tao, ZHANG Zhi-xin, et al. Application of EMD denoising and spectral kurtosis in early fault diagnosis of rolling element bearings [J]. Journal of vibration and shock, 2010, 29(3):18-21.
[15] 邵杰.转子系统轴心轨迹特征提取与自动识别研究[D].太原理工大学，2018.
SHAO Jie. Research on feature extraction and automatic identification of rotor system's axis trajectory [D]. Taiyuan University of Technology, 2018.
[16] 王雷，王奉涛，朱泓，张志新，郭正刚. 基于核主分量分析的经验模式分解及其工程应用[J]. 振动与冲击，2010，29(02):39-41
WANG Lei, WANG Feng-tao, ZHU HONG, et al. Empirical mode decomposition based on kernel principal component analysis and its application in engineering [J]. Journal of vibration and shock, 2010,29(02):39-41.