【摘要】：滾動軸承在發(fā)生故障時(shí)其振動信號會出現(xiàn)調(diào)制現(xiàn)象。Teager能量算子相比于Hilbert變換在運(yùn)算速度和解調(diào)精度方面具有明顯優(yōu)勢,但其不能提供足夠高的分辨率來解調(diào)低頻調(diào)制信號,為此提出復(fù)調(diào)制細(xì)化譜分析方法。通過軸承故障模擬實(shí)驗(yàn),對采集的正常、內(nèi)圈輕微、嚴(yán)重故障的軸承振動信號進(jìn)行Teager能量算子解調(diào),然后對其包絡(luò)進(jìn)行復(fù)調(diào)制細(xì)化譜分析,得到軸承回轉(zhuǎn)頻率及其諧波,內(nèi)圈故障特征頻率及其諧波、邊頻帶。隨著軸承內(nèi)圈故障程度的增加,內(nèi)圈故障特征頻率、邊頻帶的幅值明顯增大,可作為滾動軸承內(nèi)圈點(diǎn)蝕故障特征參數(shù)。
[Abstract]:When the rolling bearing fails, the vibration signal of the rolling bearing will appear modulation phenomenon. Teager energy operator has obvious advantages in operation speed and demodulation accuracy compared with Hilbert transform, but it can not provide enough resolution to Demodulate low frequency modulation signal. In this paper, a complex modulation refinement spectrum analysis method is proposed. Through the bearing fault simulation experiment, the vibration signal of the bearing with normal, slight inner ring and serious fault is Demodulated by Teager energy operator, and then the envelope of the bearing is analyzed by complex modulation refinement spectrum, and the rotation frequency and harmonics of the bearing are obtained. Inner ring fault characteristic frequency and its harmonics, edge band. With the increase of the fault degree of the inner ring of the bearing, the characteristic frequency and the amplitude of the edge band of the inner ring of the bearing increase obviously, which can be used as the characteristic parameters of the pitting fault of the inner ring of the rolling bearing.
【作者單位】： 軍事交通學(xué)院軍用車輛工程技術(shù)研究中心;
【分類號】：TH133.33

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