Title:
VERTICAL SUPERCONDUCTIVE MAGNETIC SPRING OSCILLATOR WITH ADJUSTABLE INHERENT FREQUENCY
Document Type and Number:
WIPO Patent Application WO/2019/218889
Kind Code:
A1
Abstract:
Disclosed is a vertical superconductive magnetic spring oscillator with an adjustable inherent frequency, the oscillator comprising: a test mass (1), a negative-stiffness superconductive coil (3), and a positive-stiffness superconductive coil (2), wherein the negative-stiffness superconductive coil (3) is mounted at an opening of a semi-closed space of the test mass (1), some magnetic force lines (4) of the negative-stiffness superconductive coil (3) are located in a closed space of the test mass (1) and are in a compressed state, and the other lines are located outside the closed space of the test mass (1) and are in an extended state; a vertical magnetic repulsion force applied to the test mass (1) by the negative-stiffness superconductive coil (3) changes in a proportional manner with the displacement of the test mass (1) deviating from a balance position, and the direction of variation is the same as that of the displacement; and the positive-stiffness superconductive coil (2) is mounted inside the semi-closed space of the test mass (1), and a vertical magnetic repulsion force applied to the test mass (1) by the positive-stiffness superconductive coil (2) also changes in a proportional manner with the displacement of the test mass (1) deviating from the balance position, but the direction of the variation is opposite to that of the displacement. With this technical solution, the inherent frequency of the superconductive magnetic spring oscillator can be adjusted, and the cross-coupling effect of the horizontal and vertical degrees of freedom of the test mass (1) can also be reduced.
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Inventors:
LIU XIANGDONG (CN)
LUO JUN (CN)
LUO JUN (CN)
Application Number:
PCT/CN2019/085705
Publication Date:
November 21, 2019
Filing Date:
May 06, 2019
Export Citation:
Assignee:
UNIV HUAZHONG SCIENCE TECH (CN)
International Classes:
G01P15/105; G01V7/00
Foreign References:
| CN108918913A | 2018-11-30 | |||
| CN102901556A | 2013-01-30 | |||
| CN102253675A | 2011-11-23 | |||
| CN105738963A | 2016-07-06 | |||
| US20180068773A1 | 2018-03-08 | |||
| US20170276827A1 | 2017-09-28 |
Other References:
See also references of EP 3627158A4
Attorney, Agent or Firm:
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY PATENT AGENCY CENTER (CN)
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