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第 5 期                陆 平,等:压缩感知匹配追踪波达时间差提取及轴承损伤定位研究                                        1325

              的信号复杂,信噪比较低。                                          sion  analysis  for  wind  turbine  blade  bearing  fault  detection
                  文献  [12] 采用了   3  个声发射传感器来进行低速                    under  time-varying  low-speed  and  heavy  blade  load  condi-
              轴承试验台上的轴承损伤检测,在定位                   120°损伤源           tions[J]. IEEE Transactions on Industry Applications,2021,
              位置时,平均误差为          8.5°,略高于本文的       3.0°误差。          57(3):2791-2800.
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              本研究在相同条件下,仅使用              1  个声发射传感器进
                                                                    障诊断方法研究      [J]. 振动工程学报,2019,32(6):1104-
              行测量,误差水平仍能满足实际应用需求。

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              交叉点频率信息,可由带通滤波得到含有两次到达                                改进型卷积神经网络故障诊断方法             [J]. 振动工程学报,
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              的定位精度。所提方法既不依赖轴承的转速信息,                                ings[C]//Proceedings  of  Health  Monitoring  of  Structural  and
              同时又减少了传感器的使用数量,为低速轴承的损                                Biological Systems XV. SPIE,2021:78.
              伤定位提供了一种不同的途径。                                    [10]  MA Z P,ZHAO M,LUO M R,et al. An integrated moni-
                  未来研究应扩展到内圈损伤的识别,探索不同                              toring  scheme  for  wind  turbine  main  bearing  using  acoustic
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                                                                    LIU  Xiaoqin, TANG  Linjiang, HOU  Kaize, et  al.  Fault
              号进行精细分析和处理,以减少噪声干扰,提高故障
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