.1054 工程科学学报，第42卷，第8期 化特性.北京工业大学学报，2018,44(2)：170) diagnosis under variable speed conditions.IEEE Access,2017,5: [2]Zhang D.Feng Z P.Application of iterative generalized short-time 21918 Fourier transform to fault diagnosis of planetary gearboxes.Chin/ [13]Wang W Y.Early detection of gear tooth cracking using the Eg,2017,39(4:604 resonance demodulation technique.Mech Syst Signal Process, (张东，冯志鹏.迭代广义短时Fourier?变换在行星齿轮箱故障诊 2001,15(5):887 断中的应用.工程科学学报，2017,39(4)：604) [14]FengZ P.Liang M,Chu FL.Recent advances in time-frequency [3] Zhao C.Feng Z P.Localized fault identification of planetary analysis methods for machinery fault diagnosis:a review with gearboxes based on multiple-domain manifold.Chin/Eng,2017, application examples.Mech Syst Signal Process,2013,38(1):165 39(5):769 [15]Hlawatsch F,Auger F.Time-Frequency Analysis:Concepts and (赵川，冯志鹏.基于多域流形的行星齿轮箱局部故障识别.工 Methods.Hoboken:John Wiley Sons,2008 程科学学报，2017,39(5)：769) [16]Feng Z P,Chen X W Liang M.Iterative generalized [4]Chen X W,Feng Z P,Liang M.Planetary gearbox fault diagnosis synchrosqueezing transform for fault diagnosis of wind turbine under time-variant conditions based on iterative generalized planetary gearbox under nonstationary conditions.Mech Syst synchrosqueezing transform.J Mech Eng,2015,51(1):131 Signal Process,2015,52-53:360 (陈小旺，冯志鹏，Liang Ming基于迭代广义同步压缩变换的时 [17]Martin W,Flandrin P.Wigner -Ville spectral analysis of 变工况行星齿轮箱做障诊断.机械工程学报，2015,51(1)：131) nonstationary processes.IEEE Trans Acoust Speech Signal [5]Yang TQ,Tang L W,Zheng H Q,et al.Research on diagnosing Proces8,1985,33(6):1461 gear fault of gearbox by acoustic method.J Ordnance Eng [18]Auger F,Flandrin P.Improving the readability of time-frequency College,.2000,12(4):24 and time-scale representations by the reassignment method./EEE (杨通强，唐力伟，郑海起，等.基于声测法的齿轮箱齿轮故障诊 Trans Signal Process,1995,43(5):1068 断研究.军械工程学院学报，2000,12(4)：24) [19]Daubechies I,Lu J F,Wu H T.Synchrosqueezed wavelet [6] Lin J.Feature extraction of machine sound using wavelet and its transforms:An empirical mode decomposition-like tool.Appl application in fault diagnosis.NDTEIn,001,34(1):25 Comput Harmon Anal,2011,30(2上：243 [7] Rezaei A,Dadouche A.Wickramasinghe V,et al.A comparison [20]Yang H Z.Statistical analysis of synchrosqueezed transforms. study between acoustic sensors for bearing fault detection under Appl Comput Harmon Anal,2018,45(3):526 different speed and load using a variety of signal processing [21]Thakur G,Brevdo E,Fuckar N S,et al.The Synchrosqueezing techniques.Tribol Trans,2011,54(2):179 algorithm for time-varying spectral analysis:robustness properties [8] Metwalley S M,Hammad N,Abouel-Seoud S A.Vehicle gearbox and new paleoclimate applications.Signal Process,2013,93(5): fault diagnosis using noise measurements.Int J Energy Environ 1079 2011,2(2):357 [22]Yang H Z.Robustness analysis of synchrosqueezed transforms [9]Baydar N,Ball A.A comparative study of acoustic and vibration Statistics,2014:1 signals in detection of gear failures using Wigner -Ville [23]Latsenko D,McClintock P V E,Stefanovska A.Extraction of distribution.Mech Syst Signal Process,2001,15(6):1091 instantaneous frequencies from ridges in time-frequency repre- [10]Feng Z P.Chen X W.Liang M.et al.Time-frequency sentations of signals.Signal Process,2016,125:290 demodulation analysis based on iterative generalized demodulation [24]Pham D H,Meignen S.High-order synchrosqueezing transform for fault diagnosis of planetary gearbox under nonstationary for multicomponent signals analysis -with an application to conditions.Mech Syst Signal Process,2015,62-63:54 gravitational-wave signal.IEEE Trans Signal Process,2017, [11]Chen X W,Feng Z P.Application of reassigned wavelet scalogram 65(12):3168 in wind turbine planetary gearbox fault diagnosis under [25]Oberlin T,Meignen S,Perrier V.Second-order synchrosqueezing nonstationary conditions.Shock Vib,2016:6723267 transform or invertible reassignment?towards ideal time. 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