【摘要】：行星齒輪箱廣泛應(yīng)用于各種機(jī)械設(shè)備中,其故障診斷問(wèn)題是近年來(lái)的研究熱點(diǎn)之一。提出了基于Hilbert振動(dòng)分解和高階微分能量算子的故障診斷方法。Hilbert振動(dòng)分解計(jì)算復(fù)雜性低,能夠?qū)?fù)雜信號(hào)分解為單分量,應(yīng)用該方法對(duì)信號(hào)進(jìn)行分解,滿足高階微分能量算子的要求。高階微分能量算子的時(shí)間分辨率高,對(duì)信號(hào)的瞬態(tài)變化具有良好的自適應(yīng)性,應(yīng)用該方法檢測(cè)故障引起的瞬態(tài)沖擊,估計(jì)信號(hào)的幅值包絡(luò)和瞬時(shí)頻率。對(duì)高階微分能量算子輸出以及幅值包絡(luò)和瞬時(shí)頻率進(jìn)行Fourier變換,通過(guò)頻譜識(shí)別特征頻率,從而診斷行星齒輪箱故障。分析了行星齒輪箱的仿真信號(hào)和實(shí)驗(yàn)信號(hào),準(zhǔn)確地診斷了太陽(yáng)輪、行星輪和齒圈的故障,驗(yàn)證了該方法的有效性。
[Abstract]:Planetary gearbox is widely used in all kinds of mechanical equipment, and its fault diagnosis is one of the research hotspots in recent years. A fault diagnosis method based on Hilbert vibration decomposition and higher order differential energy operator is proposed. The complex signal can be decomposed into a single component by Hilbert vibration decomposition, and the method is used to decompose the signal. It satisfies the requirements of higher order differential energy operators. The high order differential energy operator has high time resolution and good adaptability to the transient variation of signal. This method is used to detect the transient shock caused by fault and to estimate the amplitude envelope and instantaneous frequency of the signal. The output of higher order differential energy operator, amplitude envelope and instantaneous frequency are transformed by Fourier, and the characteristic frequency is identified by frequency spectrum to diagnose the fault of planetary gearbox. The simulation and experimental signals of the planetary gearbox are analyzed, and the faults of the sun wheel, planetary gear and gear ring are accurately diagnosed, and the validity of the method is verified.
【作者單位】： 北京科技大學(xué)機(jī)械工程學(xué)院;南車青島四方機(jī)車車輛股份有限公司;
【基金】：國(guó)家自然科學(xué)基金(11272047) 教育部新世紀(jì)優(yōu)秀人才支持計(jì)劃(NCET-12-0775)
【分類號(hào)】：TH132.41

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