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RISOn the Stability of Fractional Order Systems of Neutral Type
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The aim of this study is to offer a new analytical method for the stability testing of neutral type linear timeinvariant (LTI) timedelayed fractionalorder systems with commensurate orders and multiple commensurate delays. ...
High-Dimensional Uncertainty Quantification in a Hybrid Data + Model-Based Submodeling Method for Refined Response Estimation at Critical Locations
Publisher: ASCE
Abstract: This study presents frameworks to build nonintrusive polynomial chaos expansion (PCE) models with regression and Smolyak sparse-grid quadrature to perform high-dimensional uncertainty propagation and uncertainty quantification ...
Optimal Sensor Placement for Modal Identification of Bridge Systems Considering Number of Sensing Nodes
Publisher: American Society of Civil Engineers
Abstract: A series of optimal sensor placement (OSP) techniques is discussed in this paper. A framework for deciding the optimum number and location of sensors is proposed, to establish an effective structural health monitoring (SHM) ...
Observer Kalman Filter Identification for Output-Only Systems Using Interactive Structural Modal Identification Toolsuite
Publisher: American Society of Civil Engineers
Abstract: Several modal identification techniques have been developed in the past few decades, and their use is rapidly expanding due to new focus on the instrumentation of major structures. This paper focuses on the expansion of ...
Modified Natural Excitation Technique for Stochastic Modal Identification
Publisher: American Society of Civil Engineers
Abstract: This paper presents an improvement to the eigensystem realization algorithm (ERA) with natural excitation technique (NExT), which is called the ERA-NExT-AVG method. The method uses a coded average of row vectors in each ...
Multisensor Aggregation Algorithms for Structural Damage Diagnosis Based on a Substructure Concept
Publisher: American Society of Civil Engineers
Abstract: One of the important goals of structural health monitoring is damage detection. Although many methods have been proposed to detect the existence of structural damage, relatively few studies are found on higher-level damage ...
STRIDE for Structural Identification Using Expectation Maximization: Iterative Output-Only Method for Modal Identification
Publisher: American Society of Civil Engineers
Abstract: This paper introduces structural identification using expectation maximization (STRIDE), a novel application of the expectation maximization (EM) algorithm and approach for output-only modal identification. The EM algorithm ...
Structural Identification for Mobile Sensing with Missing Observations
Publisher: American Society of Civil Engineers
Abstract: There are many occasions in structural health monitoring (SHM) on which collected data sets contain missing observations. Such instances may occur as a result of failed communications or packet losses in a wireless sensor ...
Sensitivity Metrics for Maximum Likelihood System Identification
Publisher: American Society of Civil Engineers
Truncated Physical Model for Dynamic Sensor Networks with Applications in High-Resolution Mobile Sensing and BIGDATA
Publisher: American Society of Civil Engineers
Abstract: Historically, structural health monitoring (SHM) has relied on fixed sensors, which remain at specific locations in a structural system throughout data collection. This paper introduces state-space approaches for processing ...