A parameter estimation algorithm for spatial sine testing  Theory and evaluation
Abstract
This paper presents the theory and an evaluation of a spatial sine testing parameter estimation algorithm that uses directly the measured forced mode of vibration and the measured force vector. The parameter estimation algorithm uses an ARMA model and a recursive QR algorithm is applied for data reduction. In this first evaluation, the algorithm has been applied to a frequency response matrix (which is a particular set of forced mode of vibration) using a sliding frequency window. The objective of the sliding frequency window is to execute the analysis simultaneously with the data acquisition. Since the pole values and the modal density are obtained from this analysis during the acquisition, the analysis information can be used to help determine the forcing vectors during the experimental data acquisition.
 Publication:

International Journal of Analytical and Experimental Modal Analysis
 Pub Date:
 July 1992
 Bibcode:
 1992IJAEM...7..213R
 Keywords:

 Forced Vibration;
 Parameter Identification;
 Structural Vibration;
 Algorithms;
 Data Acquisition;
 Frequency Response;
 Stiffness Matrix;
 Vibration Damping;
 Structural Mechanics