摘要
采用Rayleigh Ritz方法推导电流变夹层梁的动力学方程 ,在夹层梁动力分析的基础上 ,基于滑模控制理论 ,设计电流变夹层梁的主动控制的控制器。研究确定性系统和不确定性系统控制率的生成。
The dynamic characters and vibration control of a sandwich beam with Electro Rheological fluid as its core layer were given. The mathematical models based on the Rayleigh Ritz approach, is developed to describe the longitudinal and flexural vibration behaviour of a cantilevered beam. And a governing equation of motion is derived via Lagrange's equation, and a reduced order control model is subsequently obtained through a modal analysis. Uncertain system parameters such as modal frequency variations and damping variations are included in the control model. Based on a sliding mode control theory, which has inherent robustness to system uncertainties, an active vibration control strategy of ER fluid beam is developed. Numerical results show that this method is effective and practical as well.
出处
《机械强度》
CAS
CSCD
北大核心
2002年第2期180-184,205,共6页
Journal of Mechanical Strength
基金
高等学校博士点专项科研基金 (1 9990 6990 8)
陕西省教委专项科研基金资助项目 (99JK2 2 2 )
