SECOND ORDER BLIND IDENTIFICATION OF SINGLE-CHANNEL SIGNAL BASED ON KERNELS
Weight-adjusted variant second order blind identification（ WASOBI） algorithm had been used in fault diagnosis field,but it couldn’t separate source signal when the observation signal’s dimension was insufficient. This paper combined kernels with this algorithm to achieve underdetermined blind source...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Mechanical Strength
2018-01-01
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| Series: | Jixie qiangdu |
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| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.05.005 |
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| author | 刘邦 肖涵 易灿灿 |
| author_facet | 刘邦 肖涵 易灿灿 |
| author_sort | 刘邦 |
| collection | DOAJ |
| description | Weight-adjusted variant second order blind identification（ WASOBI） algorithm had been used in fault diagnosis field,but it couldn’t separate source signal when the observation signal’s dimension was insufficient. This paper combined kernels with this algorithm to achieve underdetermined blind source separation,and applied it to multi-fault diagnosis. First,the collected single-channel signal was decomposed into multi-dimensional signal by kernels. Then the K-SVD source number estimation algorithm was used to estimate the number of sources. According to the estimated result,a positive definite matrix was reconstructed. Finally,weight-adjusted variant second order blind identification algorithm was applied to separate the source signals. The experiment results indicate that it can well diagnose the multi-fault on rolling bearing with single-channel mechanical signal,feasibility of this method is also validated. |
| format | Article |
| id | doaj-art-8b99a236b77d4b4cb56b3d039bff28a5 |
| institution | Kabale University |
| issn | 1001-9669 |
| language | zho |
| publishDate | 2018-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj-art-8b99a236b77d4b4cb56b3d039bff28a52025-01-15T02:31:11ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692018-01-01401043104930602640SECOND ORDER BLIND IDENTIFICATION OF SINGLE-CHANNEL SIGNAL BASED ON KERNELS刘邦肖涵易灿灿Weight-adjusted variant second order blind identification（ WASOBI） algorithm had been used in fault diagnosis field,but it couldn’t separate source signal when the observation signal’s dimension was insufficient. This paper combined kernels with this algorithm to achieve underdetermined blind source separation,and applied it to multi-fault diagnosis. First,the collected single-channel signal was decomposed into multi-dimensional signal by kernels. Then the K-SVD source number estimation algorithm was used to estimate the number of sources. According to the estimated result,a positive definite matrix was reconstructed. Finally,weight-adjusted variant second order blind identification algorithm was applied to separate the source signals. The experiment results indicate that it can well diagnose the multi-fault on rolling bearing with single-channel mechanical signal,feasibility of this method is also validated.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.05.005Single-channel signalWeight-adjusted variant second order blind identificationKernelsSource number estimationMulti-fault diagnosis |
| spellingShingle | 刘邦 肖涵 易灿灿 SECOND ORDER BLIND IDENTIFICATION OF SINGLE-CHANNEL SIGNAL BASED ON KERNELS Jixie qiangdu Single-channel signal Weight-adjusted variant second order blind identification Kernels Source number estimation Multi-fault diagnosis |
| title | SECOND ORDER BLIND IDENTIFICATION OF SINGLE-CHANNEL SIGNAL BASED ON KERNELS |
| title_full | SECOND ORDER BLIND IDENTIFICATION OF SINGLE-CHANNEL SIGNAL BASED ON KERNELS |
| title_fullStr | SECOND ORDER BLIND IDENTIFICATION OF SINGLE-CHANNEL SIGNAL BASED ON KERNELS |
| title_full_unstemmed | SECOND ORDER BLIND IDENTIFICATION OF SINGLE-CHANNEL SIGNAL BASED ON KERNELS |
| title_short | SECOND ORDER BLIND IDENTIFICATION OF SINGLE-CHANNEL SIGNAL BASED ON KERNELS |
| title_sort | second order blind identification of single channel signal based on kernels |
| topic | Single-channel signal Weight-adjusted variant second order blind identification Kernels Source number estimation Multi-fault diagnosis |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.05.005 |
| work_keys_str_mv | AT liúbāng secondorderblindidentificationofsinglechannelsignalbasedonkernels AT xiàohán secondorderblindidentificationofsinglechannelsignalbasedonkernels AT yìcàncàn secondorderblindidentificationofsinglechannelsignalbasedonkernels |