✦ LIBER ✦

MODAL PARAMETER ESTIMATION: AN APPROACH USING CUMULANTS

✍ Scribed by LARDIES JOSEPH; LARBI NOUREDDINE

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 115 KB
Volume: 17
Category: Article
ISSN: 0888-3270
DOI: 10.1006/mssp.2001.1426

No coin nor oath required. For personal study only.

✦ Synopsis

A cumulant-based approach for the estimation of eigenfrequencies and damping coe$cients of a vibrating system excited by a random force is presented. Cumulants of sensors output of the system are used with a state-space representation to provide a method for modal parameter estimation. This method uses properties of a shifted Hankel matrix formed with cumulants to estimate the transition matrix of the state-space model. The transition matrix is related to modal parameters. A simulation example is included to demonstrate the e!ectiveness of the use of cumulants when the signals are corrupted by a Gaussian noise.

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