Dynamic characteristics of skyhook semi-active inerter-based vibration isolator

被引：0
|
作者：
Tang F. [1 ]
Wang Y. [1 ,2 ]
Ding H. [1 ]
Chen L. [1 ]
机构：
[1] School of Mechanics and Engineering Science, Shanghai University, Shanghai
[2] Automotive Engineering Research Institute, Jiangsu University, Zhenjiang
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 15期
关键词：
Dynamic characteristics; Semi-active inerter; Skyhook-inertance control; Vibration isolator;
D O I：
10.13465/j.cnki.jvs.2021.15.009
中图分类号：
学科分类号：
摘要：
The 3-element parallel passive inerter-based vibration isolator based on "inerter-spring-damping" can further broaden vibration isolation frequency band of traditional linear isolator, but its high-frequency vibration isolation performance deteriorates significantly. Here, a semi-active inerter-based vibration isolator based on the skyhook-inertance control was proposed to improve its high-frequency vibration isolation performance. The skyhook-inertance control strategy used the absolute-relative acceleration switch control to switch the inertance of the semi-active inerter between its maximum and minimum values, and approximately simulate the mechanical property of the ideal skyhook inerter. Dynamic characteristics of the semi-active inerter-based vibration isolator under base harmonic displacement excitation were studied. The average method was used to solve the approximate analytical solution to the system, and it was verified using the numerical solution. The results showed that compared with the passive inerter-based vibration isolator, the semi-active inerter-based vibration isolator has lower absolute displacement peak value, lower transmissibility peak value and wider vibration isolation frequency band; the latter's high frequency absolute displacement transmissibility drops obviously, it has a significant advantage over the former. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：65 / 72
页数：7
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