中国空间科学技术

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结构振动抑制的独立模态控制法

李红,俞云书   

  1. 中国空间技术研究院 ,北京卫星环境工程研究所
  • 发布日期:1992-10-25

INDEPENDENT MODAL CONTROL FOR VIBRATION SUPPRESSION

Li Hong (Chinese Academy of Space Technology) Yu Yunshu (Beijing Institute of Satellite Environmental Engineering)   

  • Published:1992-10-25

摘要： 以悬臂梁结构为控制对象,对独立模态控制法进行了概念性研究。利用有限元法建立了包括压电晶体在内的闭环系统的模型;理论计算值、试验值均表明独立模态控制法能够提高结构的模态阻尼,而未受控制模态的阻尼基本不变,整个闭环系统稳定。

关键词: 结构振动, 悬臂梁, 模态控制, 研究

Abstract: The problem on vibration suppression of the cantilever beam is Independent Modal Control Method (IMSC) .The structural dynamic mo- del has been formulated for the cantilever beam bonded piezocrystal sensors and actuators.The control testing for the first bending mode of a cantile- ver beam has been performed.The experimental results indicated that the damping ratio of first bending mode is increased,damping ratios for other modes are not changed,and the system is stabilized.

Key words: Structural vibration, Cantilever beam, Model control, Research