An Optimal Sensor Layout Using the Frequency Response Function Data within a Wide Range of Frequencies
This study presents iterative optimal sensor placement (OSP) techniques using the modal assurance criterion (MAC) and the effective independence (EI) algorithm. The algorithms use the proper orthogonal mode (POM) extracted from the frequency response functions (FRFs) of dynamic systems within a wide...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/10/3778 |
| _version_ | 1797495668667842560 |
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| author | Eun-Taik Lee Hee-Chang Eun |
| author_facet | Eun-Taik Lee Hee-Chang Eun |
| author_sort | Eun-Taik Lee |
| collection | DOAJ |
| description | This study presents iterative optimal sensor placement (OSP) techniques using the modal assurance criterion (MAC) and the effective independence (EI) algorithm. The algorithms use the proper orthogonal mode (POM) extracted from the frequency response functions (FRFs) of dynamic systems within a wide range of frequencies. The FRF-based OSP method proposed in this study has the merit of reflecting dynamic characteristics, unlike the mode shape-based method. Evaluating the MAC values and the EI indices at each iteration, the DOFs of low contribution to the objective function of candidate sensor DOFs are deleted from master DOFs and moved to slave DOFs. This process is repeated until the sensor number corresponds with the master DOFs. The validity of the proposed methods is illustrated in an example, the sensor layouts by the proposed methods are compared, and the layout inconsistency between the MAC and the EI techniques is analyzed. |
| first_indexed | 2024-03-10T01:53:59Z |
| format | Article |
| id | doaj.art-683785160f76496085e03b468a373802 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T01:53:59Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-683785160f76496085e03b468a3738022023-11-23T13:01:01ZengMDPI AGSensors1424-82202022-05-012210377810.3390/s22103778An Optimal Sensor Layout Using the Frequency Response Function Data within a Wide Range of FrequenciesEun-Taik Lee0Hee-Chang Eun1Department of Architectural Engineering, Chung-Ang University, Seoul 06974, KoreaDepartment of Architectural Engineering, Kangwon National University, Chuncheon 24341, KoreaThis study presents iterative optimal sensor placement (OSP) techniques using the modal assurance criterion (MAC) and the effective independence (EI) algorithm. The algorithms use the proper orthogonal mode (POM) extracted from the frequency response functions (FRFs) of dynamic systems within a wide range of frequencies. The FRF-based OSP method proposed in this study has the merit of reflecting dynamic characteristics, unlike the mode shape-based method. Evaluating the MAC values and the EI indices at each iteration, the DOFs of low contribution to the objective function of candidate sensor DOFs are deleted from master DOFs and moved to slave DOFs. This process is repeated until the sensor number corresponds with the master DOFs. The validity of the proposed methods is illustrated in an example, the sensor layouts by the proposed methods are compared, and the layout inconsistency between the MAC and the EI techniques is analyzed.https://www.mdpi.com/1424-8220/22/10/3778optimal sensor placementmodel reductionmodal assurance criterioneffective independenceproper orthogonal decompositionfrequency response function |
| spellingShingle | Eun-Taik Lee Hee-Chang Eun An Optimal Sensor Layout Using the Frequency Response Function Data within a Wide Range of Frequencies Sensors optimal sensor placement model reduction modal assurance criterion effective independence proper orthogonal decomposition frequency response function |
| title | An Optimal Sensor Layout Using the Frequency Response Function Data within a Wide Range of Frequencies |
| title_full | An Optimal Sensor Layout Using the Frequency Response Function Data within a Wide Range of Frequencies |
| title_fullStr | An Optimal Sensor Layout Using the Frequency Response Function Data within a Wide Range of Frequencies |
| title_full_unstemmed | An Optimal Sensor Layout Using the Frequency Response Function Data within a Wide Range of Frequencies |
| title_short | An Optimal Sensor Layout Using the Frequency Response Function Data within a Wide Range of Frequencies |
| title_sort | optimal sensor layout using the frequency response function data within a wide range of frequencies |
| topic | optimal sensor placement model reduction modal assurance criterion effective independence proper orthogonal decomposition frequency response function |
| url | https://www.mdpi.com/1424-8220/22/10/3778 |
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