Artigo Acesso aberto

A Study of Some Approaches to Vibration Data Analysis

1994; Elsevier BV; Volume: 27; Issue: 8 Linguagem: Inglês

10.1016/s1474-6670(17)47880-3

ISSN

2589-3653

Autores

Thomas Abrahamsson, Tomas McKelvey, Lennart Ljung,

Tópico(s)

Hydraulic and Pneumatic Systems

Resumo

Using data from extensive vibrational tests of the new aircraft Saab 2000 three di erent methods for vibration analysis are studied.These methods are ERA (eigensystem realization algorithm), N4SID (a subspace method) and PEM (prediction error approach).We nd that both the ERA and N4SID methods give good initial model parameter estimates that can be further improved by the use of PEM.We also nd that all methods give good insights into the vibrational modes.

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