A new grey decision dynamic model based on cybernetics knowledge for complex system optimization analyzing and its practical application

Kybernetes ◽  
2008 ◽  
Vol 37 (9/10) ◽  
pp. 1218-1226 ◽  
Author(s):  
Xiaoping Bai ◽  
Hongming Wang
Keyword(s):  
Complex System ◽  
Dynamic Model ◽  
System Optimization ◽  
Practical Application ◽  
Model Based

A fuzzy dynamic model based state estimator

2001 ◽  
Vol 122 (1) ◽  
pp. 45-72 ◽  
Author(s):  
Jeffery R. Layne ◽  
Kevin M. Passino
Keyword(s):  
Dynamic Model ◽  
State Estimator ◽  
Model Based

Non-Linear Effects of Vibration in Gas Turbine Engines With Two or Three Rotors

2002 ◽  
Author(s):  
J. Pismenny ◽  
Y. Levy
Keyword(s):  
Complex System ◽  
Gas Turbine ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Practical Application ◽  
Turbine Engine ◽  
Non Linear ◽  
Linear Elements ◽  
Linear Effects ◽  
Linear Oscillation

The dependence of the vibration characteristics of gas turbine engines on the rotor speeds becomes highly complicated in engines with two and three rotors, both because of the simultaneous dynamic action of the multiple rotors and the ambiguous relationships between their speeds. In this paper, the gas turbine engine is analyzed in the context of the theory of non-linear oscillation — as a complex system comprising a large number of non-linear elements and multiple periodical forces of different frequencies (defined by the rotor speeds). This paper presents results, which indicate that the level of vibration can obtain critical values at certain relationships between the rotor speeds. As a practical application of this phenomena it is shown that the number of three-spool engines returns from the aircraft to the engine manufacturer, due to different kinds of malfunctions, for example due to activation of the “intensified vibration” alarm, may be approximately three times that of returns of analogous two-rotor engines.

scholarly journals A dynamic model-based approach to motion and deformation tracking of prosthetic valves from biplane x-ray images

2018 ◽  
Vol 45 (6) ◽  
pp. 2583-2594
Author(s):  
Martin G. Wagner ◽  
Charles R. Hatt ◽  
David A. P. Dunkerley ◽  
Lindsay E. Bodart ◽  
Amish N. Raval ◽  
...  
Keyword(s):  
Dynamic Model ◽  
X Ray ◽  
Model Based ◽  
Prosthetic Valves

scholarly journals Dynamic model-based recommendations increase the precision and sustainability of N fertilization in midwestern US maize production

2018 ◽  
Vol 153 ◽  
pp. 256-265 ◽  
Author(s):  
S. Sela ◽  
H.M. van Es ◽  
B.N. Moebius-Clune ◽  
R. Marjerison ◽  
G. Kneubuhler
Keyword(s):  
Dynamic Model ◽  
N Fertilization ◽  
Maize Production ◽  
Model Based
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