摘要
根据带有晶闸管变流装置的电力拖动系统谐波分析的特点 ,较为详尽地分析了各种数学变换。由于小波变换克服了Fourier变换不能对信号进行局部分析这一严重缺点 ,同时有很强的特征提取功能 ,尤其对突变信号的处理 ,表现出非常明显的优点 ,特别是小波包具有将频率空间进一步细分的特性 。
According to the characteristic with harmonic analysis of electrically-driven system, all kinds of mathematical transform are in detail introduced this paper. The wavelet analysis has become the effective mathematical tool in harmonic analysis of electrically-driven system. Because it overcomes the serious weakness of the Fourier transform that cannot process local analysis and has the strong ability of extract function and especially that of processing the mutation signal. Meanwhile the characteristic is provided with wavelet packets fractionizing the frequency space further.
出处
《煤矿机械》
北大核心
2005年第2期27-28,共2页
Coal Mine Machinery
基金
黑龙江省教育厅骨干教师资助项目 (10 5 2G0 39)
关键词
非特征谐波
小波变换
小波包
non-characteristic harmonic
wavelet transform
wavelet packets
