气门动态信号处理方法研究  

Investigation on Data Processing of Valve Vibration

作　　者：李建锋[1] 俞小莉[1] 沈瑜铭[1] 刘忠民[1] 

机构地区：[1]浙江大学,杭州310027

出　　处：《内燃机工程》2004年第1期35-37,共3页Chinese Internal Combustion Engine Engineering

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.

关 键 词：内燃机 气门加速度 数据处理 最小二乘法 小波分析 

分 类 号：TK406[动力工程及工程热物理—动力机械及工程]