【摘要】 对柔性梁的振动主动控制进行了研究.主动控制策略采用独立模态空间控制,模态控制律采用离散变结构控制律;给出了从实际测量中提取模态坐标和将模态控制力转换成实际控制力的方法,并给出了离散切换面和离散变结构模态控制律的确定方法.最后结合算例,对文中所给控制方法的有效性进行了验证.更多还原

【Abstract】 Active control method for the vibration reduction of flexible cantilever beam is investigated in this paper. The independent modal space control method is used as control strategy, in which modal control law is designed using discrete-time variable-structure control method. Extraction of modal variables from actual measurements and transformation of actual control forces from modal control forces are discussed. Determination methods of discrete-time switching surface and variable-structure modal control law are presented. Effectiveness of the proposed control method is verified through a numerical simulation in the end of this paper.更多还原