The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical Systems
The Loewner framework has recently been proposed for the system identification of mechanical systems, mitigating the limitations of current frequency domain fitting processes for the extraction of modal parameters. In this work, the Loewner framework computational performance, in terms of the elapse...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/10/6/571 |
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| author | Gabriele Dessena Marco Civera Dmitry I. Ignatyev James F. Whidborne Luca Zanotti Fragonara Bernardino Chiaia |
| author_facet | Gabriele Dessena Marco Civera Dmitry I. Ignatyev James F. Whidborne Luca Zanotti Fragonara Bernardino Chiaia |
| author_sort | Gabriele Dessena |
| collection | DOAJ |
| description | The Loewner framework has recently been proposed for the system identification of mechanical systems, mitigating the limitations of current frequency domain fitting processes for the extraction of modal parameters. In this work, the Loewner framework computational performance, in terms of the elapsed time till identification, is assessed. This is investigated on a hybrid, numerical and experimental dataset against two well-established system identification methods (least-squares complex exponential, LSCE, and subspace state space system identification, N4SID). Good results are achieved, in terms of better accuracy than LSCE and better computational performance than N4SID. |
| first_indexed | 2024-03-11T02:53:09Z |
| format | Article |
| id | doaj.art-beba1ecfe6494a02a8be23cf7b55599f |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-11T02:53:09Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-beba1ecfe6494a02a8be23cf7b55599f2023-11-18T08:50:27ZengMDPI AGAerospace2226-43102023-06-0110657110.3390/aerospace10060571The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical SystemsGabriele Dessena0Marco Civera1Dmitry I. Ignatyev2James F. Whidborne3Luca Zanotti Fragonara4Bernardino Chiaia5School of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UKDepartment of Structural, Geotechnical and Building Engineering, Politecnico di Torino, 10129 Turin, ItalySchool of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UKSchool of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UKSchool of Aerospace, Transport and Manufacturing, Cranfield University, Cranfield MK43 0AL, UKDepartment of Structural, Geotechnical and Building Engineering, Politecnico di Torino, 10129 Turin, ItalyThe Loewner framework has recently been proposed for the system identification of mechanical systems, mitigating the limitations of current frequency domain fitting processes for the extraction of modal parameters. In this work, the Loewner framework computational performance, in terms of the elapsed time till identification, is assessed. This is investigated on a hybrid, numerical and experimental dataset against two well-established system identification methods (least-squares complex exponential, LSCE, and subspace state space system identification, N4SID). Good results are achieved, in terms of better accuracy than LSCE and better computational performance than N4SID.https://www.mdpi.com/2226-4310/10/6/571Loewner matrixLoewner frameworksystem identificationfrequency response functionsmodal analysisexperimental modal analysis |
| spellingShingle | Gabriele Dessena Marco Civera Dmitry I. Ignatyev James F. Whidborne Luca Zanotti Fragonara Bernardino Chiaia The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical Systems Aerospace Loewner matrix Loewner framework system identification frequency response functions modal analysis experimental modal analysis |
| title | The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical Systems |
| title_full | The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical Systems |
| title_fullStr | The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical Systems |
| title_full_unstemmed | The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical Systems |
| title_short | The Accuracy and Computational Efficiency of the Loewner Framework for the System Identification of Mechanical Systems |
| title_sort | accuracy and computational efficiency of the loewner framework for the system identification of mechanical systems |
| topic | Loewner matrix Loewner framework system identification frequency response functions modal analysis experimental modal analysis |
| url | https://www.mdpi.com/2226-4310/10/6/571 |
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