As the result of limited frequency resolution in the course of FFT and the noise,the accuracy of modal parameters identification is influenced by the frequency response function estimation.
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释义
由于FFT过程中截断及舍入等误差的存在以及噪声的影响不能完全克服;采用此方法估计的频响函数来识别模态参数;其精度受到影响.
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