机械式频率可调动力吸振器及其减振特性
Mechanical Vibration Absorber with Tunable Resonant Frequency and Its Vibration Attenuation Characteristics
为了拓宽吸振器的工作频带,提高吸振器的减振效果,研制了一种通过调节自身的几何参数来调节其固有频率的机械式频率可调动力吸振器,并设计了相应的控制方法。对吸振器的减振特性进行了理论分析。建立了多模态系统的力学模型,利用子结构导纳综合法对系统进行了仿真计算。在多模态实验平台上对该吸振器的减振效果进行了试验研究,结果表明该吸振器减振效果好,实验结果与理论结果吻合良好。
In order to improve the working frequency band and the damping effect of vibration absorber, a new kind of vibration absorber is presented whose resonant frequency can be adjusted in real-time by adapting the geometry parameters of the absorber. Its corresponding control method was also studied. Its vibration attenuation characteristics were analyzed theoretically. The simulation analysis of dynamical performance according to the theory model was proceeded with transmission mobility method. The dynamic properties of the absorber were also characterized on a multiple modal experimental platform. The experimental results match well with the theoretical results, they indicate that this kind of absorber can damp vibration well in whole range.
频率可调动力吸振器 / 振动控制 / 多模态振动 {{custom_keyword}} /
Vibration absorber with tunable resonant frequency / Vibration Control / Multiple modal vibration {{custom_keyword}} /
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