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http://dx.doi.org/10.12989/sss.2015.15.4.1041

Optimal placement of piezoelectric actuators and sensors on a smart beam and a smart plate using multi-objective genetic algorithm  

Nestorovic, Tamara (Ruhr-Universitat Bochum, Mechanics of Adaptive Systems Universitatsstr)
Trajkov, Miroslav (Ruhr-Universitat Bochum, Mechanics of Adaptive Systems Universitatsstr)
Garmabi, Seyedmehdi (Ruhr-Universitat Bochum, Mechanics of Adaptive Systems Universitatsstr)
Publication Information
Smart Structures and Systems / v.15, no.4, 2015 , pp. 1041-1062 More about this Journal
Abstract
In this paper a method of finding optimal positions for piezoelectric actuators and sensors on different structures is presented. The genetic algorithm and multi-objective genetic algorithm are selected for optimization and $H_{\infty}$ norm is defined as a cost function for the optimization process. To optimize the placement concerning the selected modes simultaneously, the multi-objective genetic algorithm is used. The optimization is investigated for two different structures: a cantilever beam and a simply supported plate. Vibrating structures are controlled in a closed loop with feedback gains, which are obtained using optimal LQ control strategy. Finally, output of a structure with optimized placement is compared with the output of the structure with an arbitrary, non-optimal placement of piezoelectric patches.
Keywords
optimal location; smart structures; $H_{\infty}$ norm; genetic algorithm; multi-objective genetic algorithm;
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Times Cited By KSCI : 2  (Citation Analysis)
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