TY - JOUR
T1 - Time-domain parameter estimation algorithm for structures. II
T2 - Numerical simulation studies
AU - Banan, Mo R.
AU - Banan, Ma R.
AU - Hjelmstad, K. D.
PY - 1995/3
Y1 - 1995/3
N2 - Monte Carlo simulation is used to study the statistical behavior of the time- domain parameter estimator presented in the companion paper, using a bridge truss as a model problem. The effects of the estimation time step, the initial parameter values, and the quality and quantity of information on the outcome of parameter estimation are investigated. The paper demonstrates that the time step must be sufficiently small to control the errors inherent in the numerical integration scheme, but should be large enough to provide new information for the estimator. As expected for this type of problem, the estimates are biased in the presence of noise in the measurements. However, for practical amplitudes of noise, the estimated parameters are sufficiently reliable. The estimator has the desirable characteristic that, when the noise amplitude is sufficiently small, the accuracy of the estimates can be increased by presenting more information to the algorithm.
AB - Monte Carlo simulation is used to study the statistical behavior of the time- domain parameter estimator presented in the companion paper, using a bridge truss as a model problem. The effects of the estimation time step, the initial parameter values, and the quality and quantity of information on the outcome of parameter estimation are investigated. The paper demonstrates that the time step must be sufficiently small to control the errors inherent in the numerical integration scheme, but should be large enough to provide new information for the estimator. As expected for this type of problem, the estimates are biased in the presence of noise in the measurements. However, for practical amplitudes of noise, the estimated parameters are sufficiently reliable. The estimator has the desirable characteristic that, when the noise amplitude is sufficiently small, the accuracy of the estimates can be increased by presenting more information to the algorithm.
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U2 - 10.1061/(ASCE)0733-9399(1995)121:3(435)
DO - 10.1061/(ASCE)0733-9399(1995)121:3(435)
M3 - Article
AN - SCOPUS:0029274352
SN - 0733-9399
VL - 121
SP - 435
EP - 447
JO - Journal of Engineering Mechanics
JF - Journal of Engineering Mechanics
IS - 3
ER -