Parameters optimization of flexible structure using genetic algorithm

Author

Saragih, Roberd

Author_Institution

Ind. & Financial Math. Res. Group, Inst. Teknol. Bandung, Bandung, Indonesia

fYear

2011

fDate

19-21 Dec. 2011

Firstpage

790

Lastpage

793

Abstract

This paper concerned with the problem of optimization of parameters for the flexible structure. The structure has 4 stories and each story is modeled such that it has a single degree of freedom in the transverse direction and one more degree of freedom in the angle of torsion around the centroid of the story. The model of structure, absorber and stroke are combined such that the number of state is 30. The process of optimization is to minimize the H_∞ -norm from closed loop transfer function of the system which implies suppressing the magnitude peaks vibration of the frequency response. Parameters optimization of flexible structure system becomes an H_∞ -output feedback problem. This problem is transformed to Bilinear Matrix Inequality problem and then it is solved by using the genetic algorithm.

Keywords

H^∞ control; closed loop systems; feedback; flexible structures; frequency response; genetic algorithms; linear matrix inequalities; minimisation; transfer functions; vibration control; H_∞-norm minimization; H_∞-output feedback problem; absorber; bilinear matrix inequality problem; closed loop transfer function; flexible structure; frequency response; genetic algorithm; parameter optimization; structure model; torsion angle; vibration suppression; Flexible structures; Frequency response; Genetic algorithms; Optimization; Shock absorbers; Springs; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Automation (ICCA), 2011 9th IEEE International Conference on

Conference_Location

Santiago

ISSN

1948-3449

Print_ISBN

978-1-4577-1475-7

Type

conf

DOI

10.1109/ICCA.2011.6137915

Filename

6137915