Actuator location and voltages optimization for shape control of smart meams using genetic algorithms

Main Author: Φουτσιτζή, Γεωργία
Other Authors: Γκόγκος, Χρήστος
Χατζηγεωργίου, Ευάγγελος
Σταυρουλάκης, Γεώργιος
Format: Article
Language: Greek
Published: MDPI 2013
Subjects:
Online Access: http://cris.teiep.gr/jspui/handle/123456789/1311
Physical Description: σελ. 111-128
ISSN: 2076-0825
Abstract: This paper presents a numerical study on optimal voltages and optimal placement of piezoelectric actuators for shape control of beam structures. A finite element model, based on Timoshenko beam theory, is developed to characterize the behavior of the structure and the actuators. This model accounted for the electromechanical coupling in the entire beam structure, due to the fact that the piezoelectric layers are treated as constituent parts of the entire structural system. A hybrid scheme is presented based on great deluge and genetic algorithm. The hybrid algorithm is implemented to calculate the optimal locations and optimal values of voltages, applied to the piezoelectric actuators glued in the structure, which minimize the error between the achieved and the desired shape. Results from numerical simulations demonstrate the capabilities and efficiency of the developed optimization algorithm in both clamped−free and clamped−clamped beam problems are presented.