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Vibration data analysis for a commercial aircraft

1996; Elsevier BV; Volume: 32; Issue: 12 Linguagem: Inglês

10.1016/s0005-1098(96)80005-7

1873-2836

Tomas McKelvey, Thomas Abrahamsson, Lennart Ljung,

Control Systems and Identification

Using data from extensive vibrational tests of the new Saab 2000 aircraft, a combined method for vibration analysis is studied. The method is based on a realization algorithm followed by standard prediction error methods (PEM). We find that the realization algorithm gives good initial model parameter estimates that can be further improved by the use of PEM. We use the method to get insights into the vibrational eigenmodes.