An efficient frequency domain state-space identification algorithm: robustness and stochastic analysis

2002 ◽  
Author(s):  
T. McKelvey ◽  
H. Akcay
Keyword(s):  
State Space ◽  
Frequency Domain ◽  
Stochastic Analysis ◽  
Identification Algorithm ◽  
Domain State

Frequency Domain State Space–Based Mode Decomposition Framework

2019 ◽  
Vol 145 (7) ◽  
pp. 04019051 ◽  
Author(s):  
Jae-Seung Hwang ◽  
Dae-Kun Kwon ◽  
Ahsan Kareem
Keyword(s):  
State Space ◽  
Frequency Domain ◽  
Mode Decomposition ◽  
Domain State

Time Domain State Space Identification of Structural Systems

1995 ◽  
Vol 117 (4) ◽  
pp. 608-618 ◽  
Author(s):  
Ketao Liu ◽  
David W. Miller
Keyword(s):  
State Space ◽  
Time Domain ◽  
Control Experiment ◽  
Model Updating ◽  
Least Square ◽  
Structural Systems ◽  
Identification Algorithm ◽  
Range Space ◽  
Domain State ◽  
Identification Technique

An integrated time domain state space identification technique for structural systems is presented. This technique integrates the Observability Range Space Extraction identification algorithm, Balanced Realization model reduction algorithm, and Least Square model updating algorithm to generate low order and highly accurate state space models for structural systems based upon time domain data. The algorithms are integrated in such a manner that the Observability Range Space Extraction identification algorithm is used to generate an initial overparameterized state space model and then the Balanced Realization model reduction and Least Square model updating algorithms are used to iteratively reduce and update the model to achieve minimum prediction errors in time domain. We shall present the Observability Range Space Extraction identification algorithm and the Least Square model updating algorithm and discuss the integrated identification technique. The MIT Middeck Active Control Experiment (MACE) is used as an application example. MACE is an active structure control experiment to be conducted in the Space Shuttle middeck. Results of ground experiments using this technique will be discussed.

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