Abstract
Optimal selection of the sampling interval for estimation of the modal parameters by an ARMA-model for a white noise loaded structure modelled as a single degree of- freedom linear mechanical system is considered. An analytical solution for an optimal uniform sampling interval, which is optimal in a Fisherian sense, is given. The solution is investigated by a simulation study. It is shown that if the experimental length T1 is fixed it may be useful to sample the record at a high sampling rate, since more measurements from the system are then collected. No optimal sampling interval exists. But if the total number of sample points N is fixed an optimal sampling interval exists. Then it is far worse to use a too large sampling interval than a too small one since the information losses increase rapidly when the sampling interval increases from the optimal value.
| Original language | English |
|---|---|
| Title of host publication | 11th International Modal Analysis Conference : Febuary 1-4, 1993 Kissimme, Florida |
| Number of pages | 7 |
| Volume | 1 |
| Place of Publication | Bethel, Connecticut |
| Publisher | Society for Experimental Mechanics |
| Publication date | 1993 |
| Pages | 240-246 |
| ISBN (Print) | 0-912053-41-0 |
| Publication status | Published - 1993 |
| Event | The International Modal Analysis Conference - Hyatt Orlando Hotel, Kissimmee, Florida, United States Duration: 1 Feb 1993 → 4 Feb 1993 Conference number: 11 |
Conference
| Conference | The International Modal Analysis Conference |
|---|---|
| Number | 11 |
| Location | Hyatt Orlando Hotel |
| Country/Territory | United States |
| City | Kissimmee, Florida |
| Period | 01/02/1993 → 04/02/1993 |
| Series | IMAC |
|---|---|
| Volume | 1 |
| ISSN | 1046-6770 |
Keywords
- Sampling Interval
- ARMA-Models
- Experimental Design