Abstract: The automation degree of the electromechanical equipment improves increasingly, resulting in more and more complex structure and correspondingly increased potential failure sources and failure modes. The safety of the whole ship will be affected in serious cases. This article introduces the signal characteristics of the common faults of the marine electromechanical equipment. The acquired waveform signals are processed and analyzed by using the relevant analysis techniques based on the cases of the misalignment fault of the diesel generator set and the loosening fault of the rolling bearing. The exact fault location and the development of the equipment can then be determined to ascertain the operation condition of the equipment and solve the practical problems.

Key words: vibration, wave form, spectrum, fault

摘要： 文章介绍了船用机电设备常见故障的信号特征,结合柴油发电机组不对中故障和滚动轴承松动故障案例,并利用相关分析技巧对获取的波形信号进行处理和分析,确定设备确切的故障位置及发展趋势,从而掌握设备的运转状况,达到解决实际问题的效果。

关键词: 振动, 波形, 频谱, 故障