1) modified wavelet packet algorithm
改进型小波包算法
1.
The common faults of squirrel-cage induction motor and the importance of it\'s fault diagnosis were introduced,the signals feature of electrical and mechanical were extracted by modified wavelet packet algorithm.
文章介绍了鼠笼式异步电动机常见的故障及其诊断的重要性,采用了改进型小波包算法从电气和机械方面提取信号的故障特征,并提出了一种基于小波包分析频带能量的故障诊断方法。
3) Improved Wavelet Packet Analysis (IWPA)
改进小波包
1.
Experimental results show that the performance of Improved Wavelet Packet Analysis (IWPA) is much better than Wavelet Packet Analysis (WPA) and WT (wavelet transform).
使用训练集大小、特征提取方法和识别方法作为影响识别错误率的三个因素,采用改进小波包(IWPA)和SVMDT相结合的方法对无线Ad Hoc网络的性能进行了评价。
4) improved wavelet packet analysis
改进小波包分析
1.
The improved wavelet packet analysis is presented to the denoising of VDR radar image.
针对VDR雷达图像在采集、数字化和传输过程中常受到各种噪声的干扰,不利于对图像进行分析、观察和压缩的问题,提出采用改进小波包分析算法进行图像消噪处理,小波包分析具有比小波更精确的局部分析能力,但由于小波包分解的隔点采样会产生严重的频带混叠现象,文中对小波包分析算法进行改进,利用信号的频移特性,将信号进行移频处理,消除频带混叠现象,达到高质量去噪的目的;通过VDR雷达图像消噪实验证明,上述改进算法好于小波包消噪方法,更优于小波消噪方法,具有更为广泛的应用价值。
5) wavelet packet algorithm
小波包算法
1.
A new method is introduced for the classification of helicopters and tanks: the wavelet packet algorithm is applied to decompose the signal of an unknown target and the optimal base number(OBN) of the signal is obtained by using the entropy function as the information cost function combined with the wavelet packet theory.
根据小波包理论及其算法提出了一种对直升机和坦克进行分类的新方法：对未知目标的某段信号用小波包算法处理后，以炳函数作为信息代价函数，根据墙的大小确定该信号的最佳基，然后统计最佳基数目，最后根据该数目是否落在预定门限内来判别目标是直升机还是坦克。
2.
Adopts the wavelet packet algorithm for fault feature extraction and proposed a diagnosis method based on band energy.
采用改进的小波包算法提取故障特征,提出了一种基于频带能量的故障诊断方法。
3.
On the basis of research of current fault diagnosis method of AC-AC frequency-conversion speed-regulation system,the paper proposed a fault diagnosis method of AC-AC frequency-conversion speed-regulation system with improved wavelet packet algorithm.
在目前交-交变频调速系统故障诊断方法的研究基础上,文章提出了一种采用改进的小波包算法对交-交变频调速系统进行故障诊断的方法。
6) algorithms/wavelet packet
算法/小波包
补充资料：改进
改变旧有情况，使有所进步：～工作ㄧ操作方法有待～。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条