摘要
提出一种基于刚度分段线性动力吸振器的振动半主动控制方案，通过调节弹性元件的间隙使吸振器工作频率跟踪外激励频率的变化。根据基波平衡导出了使主系统近似完全消振所需的间隙调节规律。数值仿真表明：这种半主动控制方案对于单自由度主系统和多自由度主系统均有很好的吸振效果和相当宽的工作频带。
Presented in this paper is a novel semi active vibration control strategy on the basis of the vibration absorber with piecewise linear elastic components.The strategy enables one to regulate the clearance of the elastic components in the vibration absorber so that the working frequency of the absorber can follow the large variation of the excitation frequency.The control law of the clearance for alleviating the vibration of the primary system is derived by means of harmonic balancing technique.The numerical simulations showed that the strategy worked successfully for both a SDOF system and a 2 DOF system when the excitation frequency varied in a wide range.
出处
《振动工程学报》
EI
CSCD
1997年第2期125-130,共6页
Journal of Vibration Engineering
基金
国家自然科学基金
国家教委"跨世纪优秀人才计划"基金
关键词
振动控制
半主动
吸振器
分段线性系统
vibration control
semi active vibration absorber
piecewise linear system
