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作者机构:Ruhr Univ Bochum Mech Adapt Syst D-44801 Bochum Germany
出 版 物:《SMART STRUCTURES AND SYSTEMS》 (Smart Struct. Syst.)
年 卷 期:2015年第15卷第4期
页 面:1041-1062页
核心收录:
学科分类:08[工学] 0804[工学-仪器科学与技术] 0802[工学-机械工程] 0813[工学-建筑学] 0814[工学-土木工程]
主 题:optimal location smart structures H-infinity norm genetic algorithm multi-objective genetic algorithm
摘 要:In this paper a method of fmding 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-infinity 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.