主、被动振动控制一体化理论及技术(IV)——主动结构和智能结构

Active and passive vibration control integrated theory and technology(IV)-active structure and smart structure

本文是系列讲座文章的第四篇,介绍了主动结构和智能结构的基本概念,以及目前的研究现状。讨论了线性主动结构的基本概念,给出了模态及其基本属性;重点介绍了有限元的建模方法;考虑建模的不确定性,讨论了不确定性的表示方法及振动鲁棒控制问题;针对航天结构的复杂性,给出了优化问题的一般提法,介绍了遗传算法和模拟退火算法两种优化算法。最后引用了两个桁架结构的实例,说明主动结构或智能结构的有关问题。

This paper is the fourth one of the lecture series on《Passive and active integrated vibration control theory and technology》. The essential issue of active structure,smart structure and the advanced research are introduced. The basic concept about linear active structure is discussed,and then the mode of the structure and its basic characteristics are given. Finite element method is emphasized in the modeling. Taken into account the uncertainty of modeling, the expression of uncertainty and the vibration robust control issues are discussed. For the complexity of aerospace structure, the general view of optimum problem is given, and two optimum algorithms are introduced:Genetic Algorithm and Simulated Annealing Algorithm. At last, in order to explain some issues of active structure or smart structure, two truss structures are cited.