基于阶次分析与循环平稳解调的齿轮箱复合故障诊断方法

中国机械工程 ›› 2013, Vol. 24 ›› Issue (10): 1320-1327.

基于阶次分析与循环平稳解调的齿轮箱复合故障诊断方法

李蓉;于德介;陈向民;刘坚

湖南大学汽车车身先进设计制造国家重点实验室,长沙,410082

出版日期:2013-05-25 发布日期:2013-05-28
基金资助:
高等学校博士学科点专项科研基金资助项目(20090161110006);湖南省科技计划资助项目(2012SK3184);广东省省部产学研结合项目(2009B090300312)
Research Fund for the Doctoral Program of Higher Education of China（No. 20090161110006）;
Hunan Provincial Science and Technology program ( No. 2012SK3184)

A Compound Fault Diagnosis Method for Gearbox Based on Order Tracking and Cyclostationary Demodulation

Li Rong;Yu Dejie;Chen Xiangmin;Liu Jian

State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha,410082

Online:2013-05-25 Published:2013-05-28
Supported by:

Research Fund for the Doctoral Program of Higher Education of China

（No. 20090161110006）;
Hunan Provincial Science and Technology program ( No. 2012SK3184)

摘要/Abstract

摘要：

针对变转速下的齿轮箱中复合故障的特征提取,提出了一种基于阶次分析与循环平稳解调的齿轮箱复合故障诊断方法。该方法先用线调频小波路径追踪算法从原始振动信号中提取转频信号,再根据转频信号对原始振动信号进行等角度重采样,将时域非平稳信号转化为角域周期平稳信号,最后对角域周期平稳信号进行循环平稳解调分析,根据故障特征阶次处的切片解调谱进行齿轮箱复合故障诊断。通过算法仿真和应用实例对包含齿轮局部故障和轴承局部故障的变转速齿轮箱复合故障进行了分析,分析结果表明,该方法在无转速计的情况下能有效地提取处于变转速下的齿轮箱复合故障的特征。

关键词: 线调频小波, 阶次跟踪, 循环平稳解调, 齿轮箱, 复合故障

Abstract:

Aiming at the problem of extracting fault characteristics from gearbox with compound faults under the conditions of changing rotating speed, a compound fault diagnosis method for gearbox based on order tracking and cyclostationary demodulation was proposed.In the proposed method,the rotating speed was estimated from original vibration signals by chirplet path pursuit algorithm.In order to transform the time domain non-stationary signals to the angular domain cyclostationary signals,the even angle resampling
was carried out to the original signals according to the obtained rotating speed.The angular domain cyclostationary signals were analyzed by cyclostationary demodulation method,and the compound fault diagnosis of gearbox was executed according to the slice demodulation spectrum of fault characteristic order.The results obtained by analysis of the algorithm simulation and application examples to the gearbox with compound faults consisted of gear local fault and bearing local fault under the condition of changing rotating speed,show that the proposed method can extract fault characteristic effectively from gearbox with compound faults.

Key words: chirplet, order tracking, cyclostationary demodulation, gearbox, compound fault

中图分类号:

李蓉, 于德介, 陈向民, 刘坚. 基于阶次分析与循环平稳解调的齿轮箱复合故障诊断方法[J]. 中国机械工程, 2013, 24(10): 1320-1327.

LI Rong, XU De-Ge, CHEN Xiang-Min, LIU Jian. A Compound Fault Diagnosis Method for Gearbox Based on Order Tracking and Cyclostationary Demodulation[J]. China Mechanical Engineering, 2013, 24(10): 1320-1327.

参考文献

[1]张含蕾[1],周洁敏[1],李刚[1].基于小波分析的感应电动机复合故障诊断[J].中国电机工程学报,2006,26(8):159-162.
[2]丁康,李巍华,朱小勇编著.齿轮及齿轮箱故障诊断实用技术[M],2005:282.
[3]Ho D,Randall R B R.Optimization of Bearing Diag-nostic Techniques Using Simulated and ActualBearing Fault Signals [J].Mechanical Systems andSignal Processing,2000,14(5):763-768.
[4]Capdessud C,Sidahmed M, Lacoume J L.Cyclosta-tionary Processes:Application in Gear Faults EarlyDiagnosis [J].Mechanical System and Signal Pro-cessing, 2000,14(3):371-385.
[5]Antoniadis I,Glossiotis G.Cyclostationary Analysisof Rolling-element Bearing Vibration Signals [J].Journal of Sound and Vibration,2001,248(5):829-845.
[6]Randall R B, Antoni J, Chobsaard S.The Relation-ship between Spectral Correlation and Envelope A-nalysis in the Diagnostics of Bearing Faults andOther Cyclostationary Machine Signals[J].Mechan-ical System and Signal

Processing,2001,15(5):945-962.
[7]Raad A, Antoni J , Sidanmed M.Indicators of Cy-clostationarity:Theory and Application to GearFault Monitoring[J].Mechanical System and SignalProcessing,2008,22(3):574-587.
[8]周福昌,陈进,何俊,毕果,张桂材,李富才.循环自相关函数的解调特性分析及其在故障诊断中的应用[J].振动工程学报,2004(z1):280-283.
[9]崔玲丽[1],高立新[1],蔡力钢[1],张建宇[1],胥永刚[1].基于循环平稳解调的齿轮裂纹早期故障诊断研究[J].振动工程学报,2008,21(3):274-278.
[10]Heyns T,Godsill S J, Villiers J P,et al.StatisticalGear Health Analysis Which is Robust to Fluctua-ting Loads and Operating Speeds [J].MechanicalSystems and Signal Processing,2012,27:651-666.
[11]Borghesani P, Pennacchi P, Randall R B, et al.Or-der Tracking for Discrete_ random Separation inVariable Speed Conditions[J].Mechanical Systemsand Signal Processing,2012,30:1-22.
[12]Shao Hui, Jin Wei, Qian Shie.Order Tracking byDiscrete Gabor Expansion[J].IEEE Transactionson Instrumentation and Measurement, 2003,52(3):754-761.
[13]赵晓平[1],侯荣涛[1].基于Viterbi算法的Gabor阶比跟踪技术[J].机械工程学报,2009(11).
[14]Bossley K M, Mckendrick R J, Harris C J,et al.Hybrid Computed Order Tracking[J].MechanicalSystems and Signal Processing,1999,13 (4):627-641.
[15]Saavedra P N,Rodriguez C G.Accurate Assess-ment of Computed Order Tracking [J].Shock andVibration,2006,13(1):13-32.
[16]郭瑜,秦树人,汤宝平,纪跃波.基于瞬时频率估计的旋转机械阶比跟踪[J].机械工程学报,2003,39(3):32-36.
[17]杨炯明[1],秦树人[1],季忠[1].旋转机械阶比分析技术中阶比采样实现方式的研究[J].中国机械工程,2005,16(3):249-253.
[18]Candes E J,Charlton P R, Helgason H.DetectingHighly Oscillatory Signals by Chirplet Path Pur-suit[J].Applied and Computational Harmonic A-nalysis,2008,24(1):14-40.
[19]Peng Fuqiang, Yu Dejie, Luo Jiesi.Sparse SignalDecomposition Method Based on Multi-scaleChirplet and Its Application to the Fault Diagnosisof Gearboxes [J].Mechanical System and SignalProcessing,201,25(2) ;549-557.
[20]陈向民[1],于德介[1],任凌志[1],皮维[1].基于线调频小波路径追踪阶比能量解调的齿轮轮齿裂纹故障诊断[J].中国机械工程,2011,22(21):2598-2603.
[21]陈向民[1],于德介[1],罗洁思[1].基于线调频小波路径追踪阶比循环平稳解调的齿轮故障诊断[J].机械工程学报,2012,48(3):95-101.