多层式智能结构中压电元件的最优配置  

The Optimal Allocation of Piezoelectric Units in Multilayer Intelligent Structure

作　　者：隋春平[1] 颜云辉[2] 赵明扬[1] 

机构地区：[1]中国科学院沈阳自动化研究所,沈阳110016 [2]东北大学,沈阳110004

出　　处：《中国机械工程》2005年第3期253-256,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(59655018)

摘　　要：　　基于压电元件的传感和驱动特性,给出了多层式压电智能结构的受控系统模型。提出了一种模态可观测性的度量方法,基于模态可控度和模态可观测度建立了多层结构压电元件最优定位的目标函数,并采用广义遗传算法进行求解。采用子空间迭代法对振动方程进行了求解。仿真和实验结果表明最优定位结果是合理的。A model of multilayer mechanical intelligent structure was established based on the sensing and actuating natures of piezoelectric elements. The method to measure the modal observability of the model was presented, and the target function of the multiplayer structure’s optimal location was established. The General Genetic Algorithm was used to solve the optimization,and the Subspace Iteration Method was adopted to solve the problems of continuum’s vibration. The simulation and experimental results show that the optimal locating results are advisable.

关 键 词：多层智能结构 模态可控度 模态可观测度 子空间迭代法 压电元件 

分 类 号：TH703.2[机械工程—仪器科学与技术] TP11[机械工程—精密仪器及机械]