考虑科氏力影响的旋转Timoshenko梁的变结构控制分析  

The Variable Structure Control of the Rotating Timoshenko Beam With the Consideration of the Coriolis Force

作　　者：徐建[1] 胡超[1] 倪博[1] 

机构地区：[1]同济大学航空航天与力学学院,上海200092

出　　处：《西部交通科技》2010年第4期66-73,共8页Western China Communications Science & Technology

基　　金：国家自然科学基金项目(10572045);黑龙江省杰出青年基金项目(JC.9)

摘　　要：文章基于Hamilton变分原理,采用Timoshenko梁理论,给出了考虑科氏力影响的中心刚体-柔性梁系统的动力学方程,并应用弹性波与振动模态理论,确定了受科氏力影响的Timoshenko梁的振动模态。同时,结合变结构控制器设计原理,对比分析了考虑科氏力与不考虑科氏力时对旋转Timoshenko梁振动的影响。By the Hamilton principle and Timoshenko beam theory, the dynamic equation of the flexible hub-beam system with the consideration of the Coriolis force is derived.Using the elastic wave propagation theory, the mode shapes of Timoshenko beam with the consideration of the Coriolis force are presented.At the same time, combined with variable structure control principle,the article compares with the results of with and without Coriolis force＇s in - fluence to the vibration of the rotating Timoshenko beam.

关 键 词：科氏力 转动Timoshenko梁 中心刚体-柔性梁系统 独立模态控制 变结 构控制 

分 类 号：V214[航空宇航科学与技术—航空宇航推进理论与工程]