在结构的损伤检测中，由于传感器数目、测试噪声等因素，限制了结构损伤检测与识别的能力。
Because of effect of sensor Numbers and test noise, detectability and recognition capability are restricted in structure damage detection.
本文简要地总结了目前主要的基于振动的结构损伤识别方法，讨论了结构损伤检测所面临的主要问题。
Vibration-based structural damage identification approaches are summarized and the important problems which trouble the structural damage identification are discussed in the paper.
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