Results 141 to 150 of about 264 (161)

Subspace identification of combined deterministic-stochastic systems by LQ decomposition

Proceedings of the 2010 American Control Conference, 2010
In this paper, we revisit the realization-based subspace identification problem for combined deterministic-stochastic discrete-time LTI systems. Under the assumption that the past horizon is sufficiently large, we reveal a block lower triangular structure of an L-factor related to the stochastic component in the LQ decomposition of data matrix based on
openaire   +1 more source

A subspace method for frequency selective identification of stochastic systems

IFAC Proceedings Volumes, 2008
A parametric method for the estimation of vector valued discrete-time stochastic systems or equivalently the spectrum of a stochastic process is presented. The key feature is that the method can be used to frequency selectively fit the model to the data.
T. McKelvey, H. Atala, D.O. Blanco Parada   +2 more
openaire   +1 more source

Modal identification of arch dams using balanced stochastic subspace identification

Journal of Vibration and Control, 2016
Dynamic characteristics extracted from ambient and forced vibration tests are always associated with some level of uncertainties because of unknown nature of applied forces, existence of ambient noises as well as measurement errors. Stochastic Subspace Methods are among the most accurate and consistent methods within the domain of operational modal ...
Reza Tarinejad, Mehran Pourgholi
openaire   +1 more source

A Note on LQ Decomposition in Stochastic Subspace Identification

2010
In this paper, we consider the role of LQ decomposition in the realization-based subspace identification method for discrete-time stochastic systems as a continuation of our earlier work [6] in deterministic setting. Under the assumption that the past horizon of the data matrix is infinite, we reveal a nice block lower triangular structure of a certain
openaire   +1 more source

Confidence Intervals on Modal Parameters in Stochastic Subspace Identification

IABSE Reports, 2010
<p>In Operational Modal Analysis, the modal parameters (natural frequencies, damping ratios and mode shapes) obtained from Stochastic Subspace Identification (SSI) of a structure, are afflicted with statistical uncertainty. For evaluating the quality of the obtained results it is essential to know the appropriate confidence intervals of these ...
Döhler, Michael, Lam, Xuan-Binh, Mevel, Laurent   +2 more
openaire   +2 more sources

Reference based stochastic subspace identification in civil engineering

Inverse Problems in Engineering, 2000
A specific strategy is required when performing vibration tests on civil engineering structures. The use of artificial excitation sources such as shakers or drop weights is often unpractical and expensive. Ambient excitation on the contrary is freely available (traffic, wind), but it causes other challenges.
B. Peeters, G. De Roeck
openaire   +1 more source

A NOVEL VARIATIONAL BAYESIAN APPROACH TO STOCHASTIC SUBSPACE IDENTIFICATION

Proceedings of the 5th International Conference on Uncertainty Quantification in Computational Sciences and Engineering (UNCECOMP 2019), 2023
O'Connell, B.J., Champneys, M.D., Cross, E.J., Rogers, T.J.   +3 more
openaire   +2 more sources

Modal Identification of Civil Structures via Stochastic Subspace Algorithm with Monte Carlo–Based Stabilization Diagram

Journal of Structural Engineering, 2022
Qiusheng Li, Kang Zhou, Li Qiu-Sheng
exaly  

EMD-based stochastic subspace identification of structures from operational vibration measurements

Engineering Structures, 2005
Weixin Ren
exaly  

Subspace identification for continuous-time stochastic systems via distribution-based approach

Automatica, 2002
Kentaro Kameyama
exaly