噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2013年
3期
208-211,245
,共5页
曹端超%康建设%赵劲松%张星辉
曹耑超%康建設%趙勁鬆%張星輝
조단초%강건설%조경송%장성휘
振动与波%EMD%HMM%齿轮%故障诊断
振動與波%EMD%HMM%齒輪%故障診斷
진동여파%EMD%HMM%치륜%고장진단
vibration and wave%EMD%HMM%gear%fault diagnosis
首先针对EMD算法中端点效应问题，采用镜像延拓法进行算法改进；而后提出一种相关度选取IMF方法，对分解得到的IMF进行相关分析，选出敏感IMF；进而将有效IMF能量比作为故障特征，采用HMM分类器进行故障识别以实现齿轮的故障诊断，实验结果表明了改进EMD和HMM方法的有效性。
首先針對EMD算法中耑點效應問題，採用鏡像延拓法進行算法改進；而後提齣一種相關度選取IMF方法，對分解得到的IMF進行相關分析，選齣敏感IMF；進而將有效IMF能量比作為故障特徵，採用HMM分類器進行故障識彆以實現齒輪的故障診斷，實驗結果錶明瞭改進EMD和HMM方法的有效性。
수선침대EMD산법중단점효응문제，채용경상연탁법진행산법개진；이후제출일충상관도선취IMF방법，대분해득도적IMF진행상관분석，선출민감IMF；진이장유효IMF능량비작위고장특정，채용HMM분류기진행고장식별이실현치륜적고장진단，실험결과표명료개진EMD화HMM방법적유효성。
The mirror extension method was used to overcome the end effect problem in EMD algorithm. Then, a correlation evaluation algorithm was proposed and applied to IMF analysis, and the sensitive IMFs were selected. Finally, taking the energy ratio of the selected IMFs as the fault feature, the HMM classifier was applied to the diagnosis of the gear fault. The results verify the effectiveness of the proposed method based on the improved EMD and HMM.
