摘要
在现有小型单轴振动台的基础上,提出可实现大幅值并保证较宽频带的小型两轴振动台方案。结合剪叉结构放大振动台的输出位移并合理设计放大比,提高最大激振幅值,并保证足够的输出力。设计直驱/放大状态切换结构,使两轴振动台能够以直驱状态工作,保证足够高的激振频率。同时,对结构进行优化设计,在保证结构强度的同时,提高结构连接刚度,使两轴振动台的工作频带最宽。有限元分析表明,所设计的两轴振动台最大激振幅值可达29.1 mm,激振频率最高可达3971.8 Hz。
On the basis of the existing single-axis vibration table,a design scheme of small double-axis vibration table which can realize large amplitude and guarantee wide frequency band is proposed.In virtue of the scissors structure,the output displacement of the vibration table is amplified and the amplification ratio is reasonably designed to increase the maximum excitation amplitude and ensure sufficient output force.The direct drive/amplification state switching structure is designed to enable the double-axis vibration table to work in the direct drive state and ensure a sufficiently high excitation frequency.At the same time,the optimization design of the structure is done,which ensures the strength of the structure and improves the rigidity of the connection rigidity of the structure,so that the working frequency band of the double-axis vibration table reaches the widest.The finite element analysis shows that the maximum excitation amplitude of the designed double-axis vibration table can reach 29.1 mm,and the excitation frequency can reach up to 3971.8 Hz.
作者
高玉龙
张啸
杨斌堂
GAO Yulong;ZHANG Xiao;YANG Bintang(The State Key Laboratory of Mechanical System and Vibration,Shanghai Jiaotong University,Shanghai 200240,China)
出处
《噪声与振动控制》
CSCD
2019年第6期55-60,共6页
Noise and Vibration Control
基金
重大科学仪器设备开发专项资助项目(2017YFF0108003)
关键词
振动与波
小型振动台
两轴振动台
大幅值
优化设计
有限元分析
vibration and wave
small vibration table
double-axis vibration table
large amplitude
optimal design
finite element analysis
