Noise Issues of Modal Identification using Eigensystem Realization Algorithm
نویسندگان
چکیده
منابع مشابه
An Eigensystem Realization Algorithm in Frequency Domain for Modal Parameter Identification
This paper demonstrates the close conceptual relationships between time domain and frequency domain approaches to identification of modal parameters for linear systems. A frequency domain eigensystem realization algorithm, via transfer functions, is developed using a known procedure formulated for a time domain eigensystem realization algorithm, via free decay measurement data. An important fea...
متن کاملTime-Varying Eigensystem Realization Algorithm
An identification algorithm called the time-varying eigensystem realization algorithm is proposed to realize discrete-time-varying plant models from input and output experimental data. It is shown that this singular value decomposition based method is a generalization of the eigensystem realization algorithm developed to realize time invariant models from pulse response sequences. Using the res...
متن کاملUncertainty Quantification for Eigensystem-Realization-Algorithm, a Class of Subspace System Identification
In Operational Modal Analysis, the modal parameters (natural frequencies, damping ratios and mode shapes), obtained from Stochastic Subspace Identification of structures, are subject to statistical uncertainty from ambient vibration measurements. It is hence neccessary to evaluate the confidence intervals of these obtained results. This paper will propose an algorithm that can efficiently estim...
متن کاملGeneral Realization Algorithm for Modal Identification of Linear Dynamic Systems
The general realization algorithm GRA is developed to identify modal parameters of linear multi-degree-of-freedom dynamic systems subjected to measured known arbitrary dynamic loading from known initial conditions. The GRA extends the well known eigensystem realization algorithm ERA based on Hankel matrix decomposition by allowing an arbitrary input signal in the realization algorithm. This gen...
متن کاملTangential interpolation-based eigensystem realization algorithm for MIMO systems
The eigensystem realization algorithm (ERA) is a commonly used datadriven method for system identification and reduced-order modelling of dynamical systems. The main computational difficulty in ERA arises when the system under consideration has a large number of inputs and outputs, requiring to compute a singular value decomposition (SVD) of a largescale dense Hankel matrix. In this work, we pr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Procedia Engineering
سال: 2011
ISSN: 1877-7058
DOI: 10.1016/j.proeng.2011.07.211