scholarly journals Design of a Nonlinear Controller for a Rigid-Flexible Satellite Using Multi-Objective Generalized Extremal Optimization with Real Codification

2012 ◽  
Vol 19 (5) ◽  
pp. 947-956 ◽  
Author(s):  
I. Mainenti-Lopes ◽  
L.C.G. Souza ◽  
F.L. De Sousa
Author(s):  
Roberto Luiz Galski ◽  
Heitor Patire Ju´nior ◽  
Fabiano Luis de Sousa ◽  
Jose´ Nivaldo Hinckel ◽  
Pedro Lacava ◽  
...  

In the present paper, a hybrid version of the Generalized Extremal Optimization (GEO) and Evolution Strategies (ES) algorithms [1], developed in order to conjugate the convergence properties of GEO with the self-tuning characteristics present in the ES, is applied to the estimation of the temperature distribution of the film cooling near the internal wall of a thruster. The temperature profile is determined through an inverse problem approach using the hybrid. The profile was obtained for steady-state conditions, were the external wall temperature along the thruster is considered as a known input. The Boltzmann’s equation parameters [2], which define the cooling film temperature profile, are the design variables. Results using simulated data showed that this approach was efficient in recuperating those parameters. The approach showed here can be used on the design of thrusters with lower wall temperatures, which is a desirable feature of such devices.


Author(s):  
Ivanoe De Falco ◽  
Eryk Laskowski ◽  
Richard Olejnik ◽  
Umberto Scafuri ◽  
Ernesto Tarantino ◽  
...  

Author(s):  
Ivanoe De Falco ◽  
Eryk Laskowski ◽  
Richard Olejnik ◽  
Umberto Scafuri ◽  
Ernesto Tarantino ◽  
...  

Author(s):  
T. Ravichandran ◽  
G. R. Heppler ◽  
D. W. L. Wang

A multi-objective design methodology that uses an evolutionary algorithm optimization process is presented and is applied to the simultaneous optimal design of a robotic manipulator/controller for performing point-to-point motion tasks. Dynamic performance measures, for the closed-loop system, are optimized by considering a nonlinear PD controller and quintic polynomial trajectories for point-to-point motions. Results of the simultaneous optimal design of a planar manipulator, a nonlinear controller, and some sample trajectories are presented to illustrate the efficacy of this methodology.


2017 ◽  
Vol 7 (04) ◽  
pp. 1
Author(s):  
Srividya Ravindra Kumar ◽  
Ciji Pearl Kurian ◽  
Marcos Eduardo Gomes-Borges

2004 ◽  
Vol 25 (7) ◽  
pp. 34-45 ◽  
Author(s):  
FABIANO LUIS DE SOUSA ◽  
VALERI V. VLASSOV ◽  
FERNANDO MANUEL RAMOS

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