Three-magnet-ring quasi-zero stiffness isolator for low-frequency vibration isolation

IF 3.4 Q1 ENGINEERING, MECHANICAL
Shang Wang, Lei Hou, Qingye Meng, Gengshuo Cui, Xiaodong Wang
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Abstract

A three-magnet-ring quasi-zero stiffness (QZS-TMR) isolator is designed to solve the problem of low-frequency vibration isolation in the vertical direction of precision equipment. QZS-TMR has both positive and negative stiffness structures. The positive stiffness structure consists of two mutually repelling magnetic rings and the negative stiffness structure consists of two magnetic rings nested within each other. By modulating the relative distance between positive and negative stiffness structures, the isolator can have QZS characteristics. Compared with other QZS isolators, the QZS-TMR is compact and easy to manufacture. In addition, the working load of QZS-TMR can be flexibly adjusted by varying the radial widths of the inner magnetic ring. In this paper, the static analysis of QZS-TMR is carried out to guide the design, and the low-frequency vibration isolation performance is studied. In addition, the experimental prototype of QZS-TMR is designed and manufactured. The static and vibration isolation experiments are carried out on the prototype. The results show that the initial vibration isolation frequency of the experimental prototype is about 4 Hz. The results show an excellent low-frequency vibration isolation effect, which is consistent with the theoretical research. This paper introduces a new approach to the design of the QZS isolator.

Abstract Image

用于低频隔振的三磁环准零刚度隔振器
三磁环准零刚度(QZS-TMR)隔振器是专为解决精密设备垂直方向的低频隔振问题而设计的。QZS-TMR 具有正刚度和负刚度两种结构。正刚度结构由两个相互排斥的磁环组成,负刚度结构由两个相互嵌套的磁环组成。通过调节正、负刚度结构之间的相对距离,隔离器可具有 QZS 特性。与其他 QZS 隔离器相比,QZS-TMR 结构紧凑,易于制造。此外,QZS-TMR 的工作载荷可通过改变内磁环的径向宽度进行灵活调节。本文对 QZS-TMR 进行了静态分析以指导设计,并研究了其低频隔振性能。此外,还设计并制造了 QZS-TMR 的实验原型。在原型上进行了静态和隔振实验。结果表明,实验原型的初始隔振频率约为 4 Hz。结果表明,低频隔振效果极佳,与理论研究结果一致。本文介绍了一种设计 QZS 隔振器的新方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
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