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Vibration Control Using an Air Damped Dynamic Vibration Absorber

使用空气阻尼动态减振器进行振动控制

基本信息

批准号：
09650276
负责人：
ASAMI Toshihiko
金额：
$ 2.11万
依托单位：
Himeji Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650276/
关键词：
Damping Damper Dynamic Vibration Absorber Air Damper Vibration Control Device Optimum Design Algebraic Manipulation Fixed-Points Theory 制振装置

项目摘要

We have studied on the vibration control using a dynamic vibration absorber (DVA) with an air damper consisting of a piston and a cylinder. The air damper can conveniently be represented by the Maxwell model where a spring element and a dashpot are connected in series. Thus, the air damper itself has no ability to return the piston to its original position. For this reason, it is necessary for the piston to be supported by a spring which is placed in parallel with the damper. The air damped DVA can then be modeled by the three-element model. Many studies have been done on the Voigt type of DVA, and the accurate expressions of optimum tuning and damping parameters have already been derived by Hahnkamm and Brock et al. However, only a few papers have been published on the three-element type of DVA, and reliable expressions for it have not been derived until now. Therefore, we began our work by trying to derive expressions for optimum parameters of the three-element type of DVA.It was clear that the optimized three-element type of DVA is superior to the conven tional Voigt type of DVA.First, the optimum parameters which we obtained from our expressions were tested on a vertically vibrating body. Second, we try to control the holizontal vibration of a two-degree-of-freedom structure using the air damped DVA.Both experiments showed that the air damped DVA designed by our theory has outstanding effect on the reduction of vibration of the machines and the structures.

本文研究了由活塞和气缸组成的空气阻尼器的动态减振器的振动控制。空气阻尼器可以方便地用麦克斯韦模型来表示，其中弹簧元件和阻尼器串联在一起。因此，空气阻尼器本身没有能力将活塞返回到其原始位置。因此，活塞必须由与减振器平行放置的弹簧支撑。然后用三元模型对空气阻尼DVA进行建模。对Voigt型DVA进行了大量的研究，Hahnkamm和Brock等人已经推导出了最优调谐和阻尼参数的精确表达式。然而，关于DVA三元型的论文很少，目前还没有可靠的DVA表达式。因此，我们开始了我们的工作，试图推导出DVA三元型的最佳参数表达式。结果表明，优化后的三要素DVA优于传统Voigt型DVA。首先，在一个垂直振动体上对由表达式得到的最佳参数进行了试验。其次，我们尝试使用空气阻尼DVA来控制二自由度结构的水平振动。实验结果表明，采用该理论设计的空气阻尼DVA对机械和结构的减振效果显著。