摘要
本文分析了在频域法冲击载荷识别中,测量噪声对识别精度的影响;从理论上论证了相干修正可有效地抑制响应信号的测量噪声,从而提高识别精度;给出了可用于工程实际的相干修正技术方法,并通过实验验证了相干修正对提高识别精度的有效性.
In the paper the influence of measurement noise upon the precision of shock load i-dentification by frequency-domain method is analyzed. It is theoretically expounded that coherence modification can restrain measurement noise in the responce signal and increase identification precision. A kind of coherence modification technique applicable to engineering practice is presented, and its validity is tested by experiment.
出处
《振动与冲击》
EI
CSCD
1998年第1期34-37,共4页
Journal of Vibration and Shock
关键词
载荷识别
相干修正
冲击载荷
频域法
shock load identification, coherence modification, frequency response function
