旋转柔性梁振动的主动约束阻尼控制研究

项目名称： 旋转柔性梁振动的主动约束阻尼控制研究

项目编号： No.10802047

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 电工技术

项目作者： 王淼

作者单位： 上海交通大学

项目金额： 20万元

中文摘要： 空间柔性机械臂、太空天线、工业机器人手臂、涡轮机叶片、直升机旋翼等旋转柔性结构的振动直接影响系统的工作性能，引起疲劳、损伤、甚至失效。本项目将主动约束阻尼这一新型杂交阻尼技术用于旋转柔性结构振动控制，同时考虑粘弹性材料非线性、应变的几何非线性、旋转运动引起的惯性非线性因素，建立主动约束阻尼旋转柔性梁的非线性动力学方程，研究了关键几何参数和物理参数的影响，并使用多尺度法对其参激振动稳定性进行了分析。在此基础上，借助Lyapunov直接法设计出变结构控制器，并通过数值仿真和实验两种手段进行了研究。

中文关键词： 旋转柔性梁；主动约束层阻尼；振动控制；几何非线性；

英文摘要： The performances of rotating flexible structures, such as mechanical arms,space antenna, turbine blades, copter blades, and so on, are heavily affected by their vibration. Moreover, fatigue, damage, and even failure may happen due to vibration.The object of this project is to apply active constrained layer damping(ACLD) treatments,the modern hybrid damping technology, to control the vibration of the rotating flexible structures. Nonlinear dynamic equations of a rotating flexible beam treated with ACLD are built, which includes the effects of material nonlinearity from the viscoelastic damping layer,geometrical nonlinearity from strains, and inertial nonlinearity from the rotating movement. And the effects of geometric and physical parameters on dynamic behaviour are studied in detail. With the method of multiple scales,the stability analysis is carried out on parametrically excited vibration.And a variable structure controller is designed based on Lyapunov method for the nonlinear model. Finally, the results will be examined by both numerical simulations and laboratry expriments.

英文关键词： rotating flexible beam; active constrained layer damping(ACLD); vibration control; geometrical nonlinearity;