压电智能桁架作动器配置的优化设计  

Optimal Number and Locations of Actuators for Piezoelectric Intelligent Trusses

作　　者：徐斌[1] 欧进萍[1] 姜节胜[2] 

机构地区：[1]哈尔滨工业大学深圳研究生院城市与土木工程学科部,深圳518055 [2]西北工业大学工程力学系振动工程研究所,西安710072

出　　处：《机械科学与技术》2007年第11期1511-1516,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(10472093);中国博士后科学基金项目(20060390232)资助

摘　　要：利用优化设计的思路来探讨作动器的优化配置,并将优化模型分为两类:待控模态数目固定前提下优化作动器的数目和位置;固定作动器的数目,优化作动器的位置以控制更多的模态数目。并根据该类优化问题为多目标优化的性质,提出了一种基于模糊逻辑推理的多目标遗传算法,构造了一个能与适应度相对应的评价个体优劣的评价体系,以引导处理多目标问题的遗传算法的进化过程。数值算例结果表明了所提方法是正确的和有效的。The assignment optimization of actuators is explored by optimal strategy. The optimal models can be classified as two categories： （1） the number and placements of actuators is optimized with fixed number of controlled modes ; （2） the placements of actuators are optimized so as to control a greater number of modes with fixed number of actuators. Owing to the fact that such a optimization problem should be a multiobjective optimization problem in essence, a multiobjective genetic algorithm（GA） coupled with fuzzy logic inference is put forward and an evaluation system corresponding to the fitness of the individual is constructed to assess the quality of the individual so as to guide successfully the evolutionary process of GA for dealing with the multiobjective optimization. The results of the numerical examples show that the proposed method is effective.

关 键 词：作动器配置 模态耦合空间控制 优化 智能桁架 

分 类 号：O328[理学—一般力学与力学基础]