摘要
通过选用六种不同的小波函数,对柴油机喷油系统压力波信号的时频特性进行了小波分析研究。研究结果表明:选用不同的小波函数对同一压力波信号进行时频特性分析时,得出的结果是有差别的。作者通过对小波分析结果与实测结果进行误差分析,找出较适合于柴油机喷油系统压力波时频特性分析的小波函数。
In this paper, six wavelet functions were selected for the analysis of time-frequency characteristics of the pressure wave signal in fuel injection system of a diesel engine. The results showed that when different wavelet functions were used to analyze the same pressure wave signal, the differences could be found between each other. By analyzing the error between the wavelet analysis results and the experiment results, the best wavelet function, which is suitable for the analysis of time-frequency characteristics of the pressure wave signal in fuel injection system of a diesel engine, can be obtained.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2003年第1期13-17,共5页
Chinese Internal Combustion Engine Engineering
