摘要
利用小波去噪抑制测量噪声的影响,采用Hilbert变换法和峰值法估计波纹管的阻尼系数。对比分析了不同噪声下的两种方法的估计精度。研究结果表明,Hilbert变换法具有良好的估计精度和鲁棒性。
The estimation methods of damping factor of bellows under noise environment by free vibration response were presented.The wavelet transform was used to reduce the effect of environ- mental noise.The realized methods and precision analysis of Hilbert transform method and peak value method to estimate damping factor were also considered.It is shown that the Hilbert transform is more precise and robust than peak value method.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2006年第S2期111-113,117,共4页
China Mechanical Engineering
