Experimental Model-Based Aeroelastic Control for Flutter Suppression and Gust-Load Alleviation

2012 ◽  
Vol 35 (5) ◽  
pp. 1377-1390 ◽  
Author(s):  
Jie Zeng ◽  
Sunil L. Kukreja ◽  
Boris Moulin
Keyword(s):  
Experimental Model ◽  
Flutter Suppression ◽  
Model Based ◽  
Gust Load Alleviation

Active aeroelastic wing design for gust load alleviation and flutter suppression

1997 ◽  
Author(s):  
Changho Nam ◽  
Youdan Kim ◽  
Jeffrey Layton ◽  
Changho Nam ◽  
Youdan Kim ◽  
...  
Keyword(s):  
Wing Design ◽  
Flutter Suppression ◽  
Gust Load Alleviation

scholarly journals Structured Control Design for a Highly Flexible Flutter Demonstrator

Aerospace ◽  
2019 ◽  
Vol 6 (3) ◽  
pp. 27 ◽  
Author(s):  
Manuel Pusch ◽  
Daniel Ossmann ◽  
Tamás Luspay
Keyword(s):  
Control System ◽  
Flight Control ◽  
Optimization Problems ◽  
Linear Optimization ◽  
Longitudinal Axis ◽  
Flight Control System ◽  
Flutter Suppression ◽  
Model Based ◽  
Non Linear ◽  
Linear Optimization Problems

The model-based flight control system design for a highly flexible flutter demonstrator, developed in the European FLEXOP project, is presented. The flight control system includes a baseline controller to operate the aircraft fully autonomously and a flutter suppression controller to stabilize the unstable aeroelastic modes and extend the aircraft’s operational range. The baseline control system features a classical cascade flight control structure with scheduled control loops to augment the lateral and longitudinal axis of the aircraft. The flutter suppression controller uses an advanced blending technique to blend the flutter relevant sensor and actuator signals. These blends decouple the unstable modes and individually control them by scheduled single loop controllers. For the tuning of the free parameters in the defined controller structures, a model-based approach solving multi-objective, non-linear optimization problems is used. The developed control system, including baseline and flutter control algorithms, is verified in an extensive simulation campaign using a high fidelity simulator. The simulator is embedded in MATLAB and a features non-linear model of the aircraft dynamics itself and detailed sensor and actuator descriptions.

scholarly journals Autoimmune hepatitis experimental model based on adenoviral infections

Hepatology ◽  
2013 ◽  
Vol 59 (1) ◽  
pp. 354-354 ◽  
Author(s):  
Pascal Lapierre ◽  
Kathie Béland ◽  
Fernando Alvarez
Keyword(s):  
Autoimmune Hepatitis ◽  
Experimental Model ◽  
Model Based

scholarly journals Physical Routes to Primitive Cells: An Experimental Model Based on the Spontaneous Entrapment of Enzymes inside Micrometer-Sized Liposomes

Life ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 969-996 ◽  
Author(s):  
Erica D'Aguanno ◽  
Emiliano Altamura ◽  
Fabio Mavelli ◽  
Alfred Fahr ◽  
Pasquale Stano ◽  
...  
Keyword(s):  
Experimental Model ◽  
Model Based

Protichnites eremita unshelled? Experimental model-based neoichnology and new evidence for a euthycarcinoid affinity for this ichnospecies

2012 ◽  
Vol 86 (3) ◽  
pp. 442-454 ◽  
Author(s):  
Joseph H. Collette ◽  
Kenneth C. Gass ◽  
James W. Hagadorn
Keyword(s):  
Experimental Model ◽  
Model Based ◽  
Left Handed ◽  
Single Animal ◽  
New Material ◽  
New Evidence

Protichnites eremita from the Cambrian Elk Mound Group of Wisconsin is reinterpreted based on new material and trackway experiments. Two new forms of P. eremita suggest that the discrete medial imprints of these traces could be produced by the segmented postabdomen of euthycarcinoids from the same deposit. Form 1 could have been produced by a pair of euthycarcinoids traveling together, like in limulid amplexus, where both individuals made imprints with their postabdomens. In this scenario, if one individual held its postabdomen to the left side, it is possible to produce left-handed shingling in trackways and angled segmentation of each medial imprint. Form 2 could have been produced by a single animal traveling in arcing or tightly looping paths. Experimentally-produced medial imprints yield morphologies that are consistent with both trackway forms. Thus, it seems more likely that P. eremita was produced directly by the animal's body (alone or paired) rather than by employing hermit-like behavior.

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