### Resumé

Originalsprog | Engelsk |
---|---|

Titel | Proceedings of the 9th International Conference on Experimental Mechanics : 20-24 August 1990, Copenhagen Denmark |

Antal sider | 10 |

Forlag | Technical University of Denmark (DTU) |

Publikationsdato | 1990 |

Sider | 2049-2058 |

ISBN (Trykt) | 8777400356 |

Status | Udgivet - 1990 |

Begivenhed | The International Conference on Experimental Mechanics - Copenhagen, Danmark Varighed: 20 aug. 1990 → 24 aug. 1990 Konferencens nummer: 9 |

### Konference

Konference | The International Conference on Experimental Mechanics |
---|---|

Nummer | 9 |

Land | Danmark |

By | Copenhagen |

Periode | 20/08/1990 → 24/08/1990 |

### Fingerprint

### Emneord

- RDD
- Random Dec technique
- ARMA Models
- FFT

### Citer dette

*Proceedings of the 9th International Conference on Experimental Mechanics: 20-24 August 1990, Copenhagen Denmark*(s. 2049-2058). Technical University of Denmark (DTU).

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*Proceedings of the 9th International Conference on Experimental Mechanics: 20-24 August 1990, Copenhagen Denmark.*Technical University of Denmark (DTU), s. 2049-2058, The International Conference on Experimental Mechanics, Copenhagen, Danmark, 20/08/1990.

**Spectral Estimation by the Random Dec Technique.** / Brincker, Rune; Jensen, Jacob L.; Krenk, Steen.

Publikation: Bidrag til bog/antologi/rapport/konference proceeding › Konferenceartikel i proceeding › Forskning › peer review

TY - GEN

T1 - Spectral Estimation by the Random Dec Technique

AU - Brincker, Rune

AU - Jensen, Jacob L.

AU - Krenk, Steen

PY - 1990

Y1 - 1990

N2 - This paper contains an empirical study of the accuracy of the Random Dec (RDD) technique. Realizations of the response from a single-degree-of-freedom system loaded by white noise are simulated using an ARMA model. The Autocorrelation function is estimated using the RDD technique and the estimated functions are compared to an analytic solution. The RDD and FFT techniques are compared, and the influence og trig level, damping ratio, type og trig window, and selection og trig points is investigated. The RDD technique appears to be accurate and fast compared to the FFT technique, and the technique is accurate also at small damping ratios and when the estimated functions contain only few points. It is illustrated how bias might be introduced or removed by the choice of trig window and the selection of trig points.

AB - This paper contains an empirical study of the accuracy of the Random Dec (RDD) technique. Realizations of the response from a single-degree-of-freedom system loaded by white noise are simulated using an ARMA model. The Autocorrelation function is estimated using the RDD technique and the estimated functions are compared to an analytic solution. The RDD and FFT techniques are compared, and the influence og trig level, damping ratio, type og trig window, and selection og trig points is investigated. The RDD technique appears to be accurate and fast compared to the FFT technique, and the technique is accurate also at small damping ratios and when the estimated functions contain only few points. It is illustrated how bias might be introduced or removed by the choice of trig window and the selection of trig points.

KW - RDD

KW - Random Dec technique

KW - ARMA Models

KW - FFT

KW - RDD

KW - FFT

KW - ARMA Models

KW - Random Dec technique

M3 - Article in proceeding

SN - 8777400356

SP - 2049

EP - 2058

BT - Proceedings of the 9th International Conference on Experimental Mechanics

PB - Technical University of Denmark (DTU)

ER -