Abstract
In this paper a new frequency domain technique is introduced for the modal identification from ambient responses, ie. in the case where the modal parameters must be estimated without knowing the input exciting the system. By its user friendliness the technique is closely related to the classical approach where the modal parameters are estimated by simple peak picking. However, by introducing a decomposition of the spectral density function matrix, the response can be separated into a set of single degree of freedom systems, each corresponding to an individual mode. By using this decomposition technique close modes can he identified with high accuracy even in the case of strong noise contamination of the signals.
| Original language | English |
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| Title of host publication | IMAC 18 : Proceedings of the International Modal Analysis Conference (IMAC), San Antonio, Texas, USA, February 7-10, 2000 |
| Number of pages | 6 |
| Publication date | 2000 |
| Pages | 625-630 |
| Publication status | Published - 2000 |
| Event | The International Modal Analysis Conference - San Antonio, Texas, United States Duration: 7 Feb 2000 → 10 Feb 2000 Conference number: 18 |
Conference
| Conference | The International Modal Analysis Conference |
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| Number | 18 |
| Country/Territory | United States |
| City | San Antonio, Texas |
| Period | 07/02/2000 → 10/02/2000 |
Keywords
- Modal Identification
- Ambient Respons Analysis
- Modal Parameters
- Basic Frequency Domain Tecnique
- BFD
- Peak Picking Technique
- Frequency Domain Decomposition