赵晓宁等：基于集合经验模式分解和交叉能量算子的滚动轴承故障诊断 ·69 0.8 0.14 (a) b 0.6 0.12 0.10 0.4 0.08 02 0.06 0 屋 0.04 0.2 0.02 0 -04 -0.02 0.6 0.04 086 0.066 5.0 (c) 4.5 54.84 25 2.0 995603 1.5 1.0 0.5 200 400600 800 1000 fhz 图4正常轴承信号分析结果，(a)时域波形：(b)瓣时交叉能量波形：(c)交叉能量频谱 Fig.4 Analysis result of normal bearing signal:(a)time domain waveform:(b)instantaneous cross energy:(c)cross energy spectrum 0.8 0.30 0.6 0.25 0.4 0.20 0.15 0.10 0.2 0.05 0.4 0 06 -0.05 0.8 6 0.106 10 (e) 030.03 1.0 91.03 9121,4 0.8 60,6 0.6 0.4 0.2 536.8 200 400 600 800 1D00 f/Hz 图5外圈故障信号分析结果.(a)时域波形：(b)瞬时交叉能量波形：（©）交叉能量颜谱 Fig.5 Analysis result of outer race damaged signal:(a)time domain waveform:(b)instantaneous cross energy;(c)cross energy spectrum赵晓宁等: 基于集合经验模式分解和交叉能量算子的滚动轴承故障诊断 图 4 正常轴承信号分析结果． ( a) 时域波形; ( b) 瞬时交叉能量波形; ( c) 交叉能量频谱 Fig． 4 Analysis result of normal bearing signal: ( a) time domain waveform; ( b) instantaneous cross energy; ( c) cross energy spectrum 图 5 外圈故障信号分析结果． ( a) 时域波形; ( b) 瞬时交叉能量波形; ( c) 交叉能量频谱 Fig． 5 Analysis result of outer race damaged signal: ( a) time domain waveform; ( b) instantaneous cross energy; ( c) cross energy spectrum ·69·