Abstract : The waveform shape analysis based on the fluctuation law of the instantaneous angular speed (IAS) of diesel engine under normal condition is an important monitoring method.

• 摘要 ：瞬时转速波形分析法是以柴油机正常态瞬时转速波动规律为判据的分析方法，因此，瞬时转速波动规律的仿真计算非常重要。