【摘要】 讨论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更多还原

【Abstract】 Data Processing of valve vibration was investigated on this paper, major in low-frequency current component and high-frequency mechanical jamming component. Based on test data analysis, least-squares method could deal with low-frequency current component effectively, The method of applying the wavelet analysis to filter high-frequency mechanical jamming component in the sample data is described.更多还原