中国科技论文
中國科技論文
중국과기논문
Sciencepaper Online
2014年
10期
1170-1173
,共4页
康守强%郑建禹%王玉静%梁欣涛%谢金宝%王志伟
康守彊%鄭建禹%王玉靜%樑訢濤%謝金寶%王誌偉
강수강%정건우%왕옥정%량흔도%사금보%왕지위
滚动轴承%性能退化评估%小波包%频带谱能量熵
滾動軸承%性能退化評估%小波包%頻帶譜能量熵
곤동축승%성능퇴화평고%소파포%빈대보능량적
rolling bearing%performance degradation assessment%wavelet packet%spectral band spectrum energy entropy
滚动轴承在使用过程中会经历不同的性能退化状态。提出小波包相关频带谱能量熵以评估滚动轴承初始性能退化程度。以滚动轴承全寿命周期数据为支撑,对数据进行小波包分解,并利用相关系数法提取包含主要故障信息的时频分量,然后沿时间轴计算各频带幅值谱,再计算谱能量熵。通过实验与时域典型指标均方根值(RMS),以及小波包频带幅值谱熵和小波包频带谱能量熵评估指标进行对比,验证了所提方法在滚动轴承性能退化评估中,对初始故障的评估具有一定的优越性。
滾動軸承在使用過程中會經歷不同的性能退化狀態。提齣小波包相關頻帶譜能量熵以評估滾動軸承初始性能退化程度。以滾動軸承全壽命週期數據為支撐,對數據進行小波包分解,併利用相關繫數法提取包含主要故障信息的時頻分量,然後沿時間軸計算各頻帶幅值譜,再計算譜能量熵。通過實驗與時域典型指標均方根值(RMS),以及小波包頻帶幅值譜熵和小波包頻帶譜能量熵評估指標進行對比,驗證瞭所提方法在滾動軸承性能退化評估中,對初始故障的評估具有一定的優越性。
곤동축승재사용과정중회경력불동적성능퇴화상태。제출소파포상관빈대보능량적이평고곤동축승초시성능퇴화정도。이곤동축승전수명주기수거위지탱,대수거진행소파포분해,병이용상관계수법제취포함주요고장신식적시빈분량,연후연시간축계산각빈대폭치보,재계산보능량적。통과실험여시역전형지표균방근치(RMS),이급소파포빈대폭치보적화소파포빈대보능량적평고지표진행대비,험증료소제방법재곤동축승성능퇴화평고중,대초시고장적평고구유일정적우월성。
The rolling bearing will experience some different performance degradation states during the operation.An evaluation index is proposed to evaluate the mild fault performance degradation degree for the rolling bearing,based on the wavelet packet correlative spectral band spectrum energy entropy.The life cycle data of rolling bearing is decomposed by using the wavelet pack-et decomposition method.Correlation coefficient method is used to extracted the time-frequency domain components which contain main fault information.Then,each spectral band amplitude spectrum is calculated along the time axis.At last,the spectral ener-gy entropy can be calculated.Comparing with the typical time domain index RMS,wavelet packet spectral band amplitude spec-trum entropy and wavelet packet spectral band spectrum energy entropy evaluation indexes,the advantages of the proposed meth-od are verified for assessing mild fault of rolling bearing performance degradation degree.