摘要
该文介绍了一种新的非接触式超导激振技术。利用非理想第二类超导块材YBCO的迈斯纳效应,使永磁体在场冷条件下悬浮。将线圈固定于YBCO超导块材中心,振动控制器产生控制信号输入到线圈中,使YBCO超导块材上方产生交变磁场,永磁体工作台产生振动,实现了非接触式振动。介绍了基于高温超导的磁刚度试验、正弦扫频试验和随机振动试验,其结果验证了此激振技术的可行性。与现有振动试验平台相比,其高频段控制效果好,并可在现有基础上扩展设计多自由度振动试验台。
This paper introduces a new non-contact superconducting excitation technology.Using the Meissner effect of the non-ideal second type superconducting bulk material YBCO,the permanent magnets are suspended under field cooling conditions.The coil fixed in the center of the YBCO superconducting block,and the vibration controller generates a control signal input into the coil to generate an alternating magnetic field above the YBCO superconducting block,and the permanent magnet table generates vibration to realize non-contact vibration.The magnetic stiffness test,sine sweep test and random vibration test based on high temperature superconductivity are also introduced.The results verify the feasibility of this excitation technology.compared with the existing vibration test platform,its high frequency band control effect is good,and the multi-degree-of-freedom vibration test bench can be extended on the existing basis.
作者
董昊
黄毅文
陈润泽
黄迪山
DONG Hao;HUANG Yiwen;CHEN Runze;HUANG Dishan(School of Mechatronical Engineering and Automation,Shanghai University,Baoshan 200072,China)
出处
《实验科学与技术》
2018年第6期46-49,共4页
Experiment Science and Technology
关键词
振动试验台
非接触式激振
迈斯纳效应
高温超导体
vibration table
non-contact vibration excitation
Meissner effect
high temperature superconductor
