Development of GA-based control system for active shape control of inflatable space structures

Author

Peng, Fujun ; Hu, Yan-Ru ; Ng, Alfred

Author_Institution

Directorate of Spacecraft Eng., Canadian Space Agency, Saint-Hubert, Que.

fYear

2005

fDate

28-31 Aug. 2005

Firstpage

577

Lastpage

582

Abstract

This paper describes the development of a control system used for the active shape control of inflatable space structures. The genetic algorithm is utilized for the optimization of control variables. A vision system is implemented for the measurement of the structure shape. Shape memory alloy wire actuators are used to exert the obtained optimal tensions. The developed control system is then tested on a 200mm times 300mm rectangular Kapton membrane structure. The membrane is pulled by three tensions along each edge. Different combinations of the tensions produce various wrinkles on the membrane. Test results indicate that the developed control system works very well in improving the structure shape precision

Keywords

aerospace control; computer vision; genetic algorithms; intelligent actuators; optimal control; shape control; shape memory effects; space vehicles; 200 mm; 300 mm; GA-based control system; Kapton membrane structure; active shape control; control variable; genetic algorithm; inflatable space structure; optimization; shape memory alloy wire actuator; structure shape measurement; structure shape precision; vision system; Actuators; Biomembranes; Control systems; Genetic algorithms; Machine vision; Shape control; Shape measurement; Shape memory alloys; System testing; Wire;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 2005. CCA 2005. Proceedings of 2005 IEEE Conference on

Conference_Location

Toronto, Ont.

Print_ISBN

0-7803-9354-6

Type

conf

DOI

10.1109/CCA.2005.1507188

Filename

1507188