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.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
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)
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
multilayer intelligent structure
degree of modal controllability
degree of modal observability
subspace iteration
piezoelectric element
