文中针对机械动力系统中波形已知、重复产生的冲击激励，详细介绍了一种新的检测系统，并给出了在线检测算法流程。
In this paper, a new online detection system, which is designed to inspect the shock excitation with a known waveform is discussed.
叠加平均技术使信号产生波形融合，新波形产生，后发放成份消失等多种畸变。
The technique of summation makes a lot of signal aberration such as waveform confluence, new waveform emerging and after-discharging components dismissing.
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