摘要
本文讨论了实测气门加速度信号中低频的趋势分量和高频机械振动干扰的处理方法。分析研究表明,采用最小二乘法拟合可以有效去除趋势分量,通过小波分析可以分辨并去除高频的机械振动干扰。
Data processing of valve vibration is investigated in low-frequency current component and high-frequency mechanical jamming component. Based on the test data analysis, least-squares method could deal with low-frequency current component. The method of applying the wavelet analysis to filter high-frequency mechanical jamming component in the sample data is described.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2004年第1期35-37,共3页
Chinese Internal Combustion Engine Engineering
关键词
内燃机
气门加速度
数据处理
最小二乘法
小波分析
Internal combustion engines
Least squares approximations
Valves (mechanical)
Vibrations (mechanical)
Wavelet transforms
