L
Lucas G. Horta
Researcher at Langley Research Center
Publications - 91
Citations - 2203
Lucas G. Horta is an academic researcher from Langley Research Center. The author has contributed to research in topics: System identification & Actuator. The author has an hindex of 22, co-authored 91 publications receiving 2132 citations.
Papers
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Journal ArticleDOI
Uncertainty quantification using interval modeling with performance sensitivity
Jiann-Shiun Lew,Lucas G. Horta +1 more
TL;DR: In this paper, an interval modeling approach for uncertainty quantification of a structure with significant parameter variation is presented, which can be categorized as dominant uncertainty due to structural variation, such as joint uncertainty and temperature change, and minor uncertainty associated with other factors.
Journal ArticleDOI
A Computational Approach for Model Update of an LS-DYNA Energy Absorbing Cell
TL;DR: In this article, a computational approach that uses analysis of variance, deterministic sampling techniques, response surface modeling, and genetic optimization to reconcile test with analysis results is described, and the results obtained using this approach are compared against LS-DYNA solutions by minimizing the square error using a genetic optimization.
Proceedings ArticleDOI
Ground and Flight Test Structural Excitation Using Piezoelectric Actuators
TL;DR: In this paper, a flight flutter experiment at the National Aeronautics and Space Administration (NASA) Dryden Flight Research Center, Edwards, California, used an 18-inch half-span composite model called the Aerostructures Test Wing (ATW), mounted on a centerline flight test fixture on the NASA F-15B and used distributed piezoelectric strain actuators for in-flight structural excitation.
Journal ArticleDOI
Identifying approximate linear models for simple nonlinear systems
Lucas G. Horta,Jer-Nan Juang +1 more
TL;DR: In this paper, the identification of approximate linear models from response data for certain nonlinear dynamic systems is analyzed mathematically and represented by series expansions, which are then compared with the modal parameters of a linear model identified by the Eigensystem Realization Algorithm.
Actuator placement by degree of controllability including the effect of actuator mass
TL;DR: In this paper, a perturbation technique is presented to efficiently account for the actuator mass in the computation of the degree of controllability (DOC) definitions for the control of large flexible spacecraft.