| 一种M带小波的构造方法及其应用 |
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| 引用本文： | 何正友,刘志刚,钱清泉.一种M带小波的构造方法及其应用[J].西南交通大学学报,2001,36(3):276-280. |
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| 作者姓名： | 何正友 刘志刚 钱清泉 |
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| 作者单位： | 西南交通大学铁道电气化自动化研究所, |
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| 基金项目： | 国家自然科学基金项目资助（59977019） |
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| 摘 要： | 传统2带小波变换在高尖载波信息中提取暂态居分的应用中存在局限性，M带小波变换弥补了这一缺陷，在探讨M带小波基的构造条件的基础上，研究了一种基于余弦调制完全重构滤波器组的M带小波基的构造方法，仿真分析了局部放电暂态信号的6带小波变换的特点，展示了该M带小波基构造及其应用的优点。
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| 关 键 词： | 故障检测 电力系统 计算 调制 小波变换 |
| 文章编号： | 0258-2724(2001)03-0276-05 |
An M-Band Wavelet Base
Construction Method and Its Application |
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| HE Zheng-you,LIU Zhi-gang,QIAN Qing-quan.An M-Band Wavelet Base
Construction Method and Its Application[J].Journal of Southwest Jiaotong University,2001,36(3):276-280. |
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| Authors: | HE Zheng-you LIU Zhi-gang QIAN Qing-quan |
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| Abstract: | The traditional wavelet transform has some limitations in analyzing transient signals, which are accompanied by high frequency carriers. These limitations can be overcome by M band wavelet transform. The construction conditions of M band wavelet base are discussed. Then, a new M band wavelet base construction method based on cosine modulated perfect reconstructing filter group is proposed. A 6 band wavelet base is constructed, its time and frequency characteristics are studied, and the local discharge transient signals are analyzed. The wavelet transform results of the transient indicate the advantages of the proposed method. |
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| Keywords: | fault detection power system computation modulation wavelet transforms |
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