| 基于多目标优化最佳小波包算法的PD信号压缩和重构 |
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| 引用本文： | 许高峰,孙才新,陆宠惠,唐炬,唐治德,张诚. 基于多目标优化最佳小波包算法的PD信号压缩和重构[J]. 仪器仪表学报, 2004, 25(1): 57-60 |
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| 作者姓名： | 许高峰 孙才新 陆宠惠 唐炬 唐治德 张诚 |
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| 作者单位： | 重庆大学高电压与电工新技术教育部重点实验室,重庆,400044 |
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| 摘 要： | 根据多目标函数优化的理论 ,提出了基于多目标优化最佳小波包算法的局部放电 (PD)信号压缩和重构方法 ,该方法能在误差范围内通过优化自动地调节各个节点的压缩阈值 ,并对压缩效果评价指标进行多目标优化 ,从而获得最佳的压缩效果。通过对模拟 PD信号的压缩试验表明 ,所提出的压缩方法能在获得较大压缩比的同时不失真地重构原信号 ,是一种有效的 PD信号压缩和重构方法。
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| 关 键 词： | 多目标优化 最佳小波包 压缩和重构 局部放电信号 |
| 修稿时间： | 2002-05-01 |
Compression and Reconstruction for Partial Discharge Signals Based on Optimal Wavelet Packets Algorithm Combining with Multiobjective Optimization |
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| Xu Gaofeng Sun Caixin Lu Chonghui Tang Ju Tang Zhide Zhang Cheng. Compression and Reconstruction for Partial Discharge Signals Based on Optimal Wavelet Packets Algorithm Combining with Multiobjective Optimization[J]. Chinese Journal of Scientific Instrument, 2004, 25(1): 57-60 |
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| Authors: | Xu Gaofeng Sun Caixin Lu Chonghui Tang Ju Tang Zhide Zhang Cheng |
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| Abstract: | A new method for compression and reconstruction of partial discharge signals based on optimal wavelet packets algorithm combining with multiobjective optimization is presented.The best compression effect can be obtained by adjusting the threshold of every node and multiobjective optimization of evaluating index for data compression when the error limitation is selected.The compression results of simulative PD signals show that the best compression rate can be obtained while original signal can be reconstructed without distortion.The method is an effective method for compression and reconstruction of partial discharge signals. |
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| Keywords: | Multiobjective optimization Optimal wavelet packet Compression and reconstruction Partial discharge signals |
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