Some experiences with the Eigensystem Realization AlgorithmThe Eigensystem Realization Algorithm (ERA) is a multiinput/multioutput time-domain algorithm for minimum-order system realization and modal parameter identification. It has been used for structural dynamics data analysis at the Langley Research Center for several years. Some of the practical experiences encountered in these projects are discussed in this paper. Three examples are used: the Galileo spacecraft, the Solar Array Flight Experiment, and a laboratory space-truss model. Several techniques for assessing identification accuracy are illustrated.
Document ID
19880042588
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pappa, Richard S. (NASA Langley Research Center Hampton, VA, United States)
Juang, Jer-Nan (NASA Langley Research Center Hampton, VA, United States)