Title:
SIX-DEGREE-OF-FREEDOM MICRO VIBRATION ISOLATOR BASED ON ACTIVE ELECTROMAGNETIC NEGATIVE STIFFNESS STRUCTURES
Document Type and Number:
WIPO Patent Application WO/2022/088717
Kind Code:
A1
Abstract:
A six-degree-of-freedom micro vibration isolator based on active electromagnetic negative stiffness structures (12), comprising an upper plate (10), a base plate (11), and six sets of active electromagnetic negative stiffness structures (12) connecting the upper plate (10) and the base plate (11). The active electromagnetic negative stiffness structures (12) realize the negative stiffness characteristic of non-adjustable stiffness in the vertical direction by using coaxially nested dual-magnetic ring structures, and generate precision controllable exciting flux by using energized coils (6) coaxially nested with the dual-magnetic ring negative stiffness structures, thus changing bias magnetic fields around moving magnetic rings (4), and thereby realizing the adjustment of a negative stiffness value and adapting to the changes of the vibration isolation load mass and excitation frequency. The bias magnetic fields are provided by fixed magnetic rings (2), and only small current in the coils (6) is required to generate the exciting flux to adjust the bias magnetic fields.
Inventors:
ZHAO YAMIN (CN)
CUI JUNNING (CN)
ZOU LIMIN (CN)
BIAN XINGYUAN (CN)
CHENG ZHONGYI (CN)
HUANG YINGYING (CN)
CUI JUNNING (CN)
ZOU LIMIN (CN)
BIAN XINGYUAN (CN)
CHENG ZHONGYI (CN)
HUANG YINGYING (CN)
Application Number:
PCT/CN2021/102570
Publication Date:
May 05, 2022
Filing Date:
June 26, 2021
Export Citation:
Assignee:
UNIV HARBIN TECHNOLOGY (CN)
International Classes:
F16F15/03; F16F15/067
Foreign References:
| CN112303175A | 2021-02-02 | |||
| CN112377561A | 2021-02-19 | |||
| CN109027114A | 2018-12-18 | |||
| US20170085167A1 | 2017-03-23 | |||
| CN111734780A | 2020-10-02 | |||
| JPH10227322A | 1998-08-25 |
Attorney, Agent or Firm:
BEIJING WENYUAN PATENT AGENCY CO., LTD (CN)
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