AN IMPROVED ALGORITHM FOR TIME DOMAIN AVERAGING BASED ON FRACTIONAL DELAY FILTERING
For reducing the influence of truncation error on the accuracy of time domain averaging（ TDA） induced by noninteger-period sampling,an improved algorithm of TDA based on fractional delay filtering（ FDF） is presented.On the basis of analyzing the disadvantages of current methods of TDA and the charac...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2015-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.05.014 |
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| _version_ | 1841534638255767552 |
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| author | ZOU JinChun QU Lei DAI GuangHao WANG XiuFeng SHEN YuDi |
| author_facet | ZOU JinChun QU Lei DAI GuangHao WANG XiuFeng SHEN YuDi |
| author_sort | ZOU JinChun |
| collection | DOAJ |
| description | For reducing the influence of truncation error on the accuracy of time domain averaging（ TDA） induced by noninteger-period sampling,an improved algorithm of TDA based on fractional delay filtering（ FDF） is presented.On the basis of analyzing the disadvantages of current methods of TDA and the characteristics of FDF,a presently improved method of signal truncation was used in the method to avoid the accumulation of truncation error and obtain a delay factor on each of the truncated signals,the reconstruction and resample for the truncated signals were implemented with FDF,and finally the arithmetic mean were computed after all of the truncated signals were added.The theoretical analysis and experimental results demonstrate that the method which fully makes using of the advantages of FDF on the change of delay factor,apparently reduces the truncation error of signals with non-integer-period sampling,and could obviously improve the accuracy of TDA without key-phase signal. |
| format | Article |
| id | doaj-art-061a192267a44e9c98bcdd77979b7292 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2015-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-061a192267a44e9c98bcdd77979b72922025-01-15T02:37:45ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692015-01-013779379930592552AN IMPROVED ALGORITHM FOR TIME DOMAIN AVERAGING BASED ON FRACTIONAL DELAY FILTERINGZOU JinChunQU LeiDAI GuangHaoWANG XiuFengSHEN YuDiFor reducing the influence of truncation error on the accuracy of time domain averaging（ TDA） induced by noninteger-period sampling,an improved algorithm of TDA based on fractional delay filtering（ FDF） is presented.On the basis of analyzing the disadvantages of current methods of TDA and the characteristics of FDF,a presently improved method of signal truncation was used in the method to avoid the accumulation of truncation error and obtain a delay factor on each of the truncated signals,the reconstruction and resample for the truncated signals were implemented with FDF,and finally the arithmetic mean were computed after all of the truncated signals were added.The theoretical analysis and experimental results demonstrate that the method which fully makes using of the advantages of FDF on the change of delay factor,apparently reduces the truncation error of signals with non-integer-period sampling,and could obviously improve the accuracy of TDA without key-phase signal.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.05.014Fractional delay filteringTime domain averagingTruncation errorNo key-phase signal |
| spellingShingle | ZOU JinChun QU Lei DAI GuangHao WANG XiuFeng SHEN YuDi AN IMPROVED ALGORITHM FOR TIME DOMAIN AVERAGING BASED ON FRACTIONAL DELAY FILTERING Jixie qiangdu Fractional delay filtering Time domain averaging Truncation error No key-phase signal |
| title | AN IMPROVED ALGORITHM FOR TIME DOMAIN AVERAGING BASED ON FRACTIONAL DELAY FILTERING |
| title_full | AN IMPROVED ALGORITHM FOR TIME DOMAIN AVERAGING BASED ON FRACTIONAL DELAY FILTERING |
| title_fullStr | AN IMPROVED ALGORITHM FOR TIME DOMAIN AVERAGING BASED ON FRACTIONAL DELAY FILTERING |
| title_full_unstemmed | AN IMPROVED ALGORITHM FOR TIME DOMAIN AVERAGING BASED ON FRACTIONAL DELAY FILTERING |
| title_short | AN IMPROVED ALGORITHM FOR TIME DOMAIN AVERAGING BASED ON FRACTIONAL DELAY FILTERING |
| title_sort | improved algorithm for time domain averaging based on fractional delay filtering |
| topic | Fractional delay filtering Time domain averaging Truncation error No key-phase signal |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2015.05.014 |
| work_keys_str_mv | AT zoujinchun animprovedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT qulei animprovedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT daiguanghao animprovedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT wangxiufeng animprovedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT shenyudi animprovedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT zoujinchun improvedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT qulei improvedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT daiguanghao improvedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT wangxiufeng improvedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering AT shenyudi improvedalgorithmfortimedomainaveragingbasedonfractionaldelayfiltering |