基于约束线图的超导重力梯度敏感结构型综合

贾明; 杨功流

基于约束线图的超导重力梯度敏感结构型综合

贾明,
杨功流

北京航空航天大学仪器科学与光电工程学院, 北京 100191

基金项目: 中央高校基本科研业务费专项资金资助项目(YWF-10-01-B30)

详细信息

中图分类号: V 241.6
计量
- 文章访问数: 1484
- HTML全文浏览量: 168
- PDF下载量: 577
- 被引次数: 0
出版历程
- 收稿日期: 2011-09-01
- 网络出版日期: 2012-12-30

Type synthesis for sensing mechanism of superconductor gravity gradient based on constraint pattern

School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 基于约束线图对超导重力梯度敏感结构进行型综合,分析轴向分量与交叉分量单独敏感的结构自由度与约束线图,并结合超导重力梯度测量应用提出两分量同时敏感的结构,利用自由度与约束线图确定约束类型,等效为柔性圆柱副,并选择柔性元件进行并联机构形式的布局.在型综合的基础上,通过模态仿真对比,得到两端与柔性球铰联接的刚性杆结构适于在两分量敏感结构中应用的结论.刚度特性仿真分析结果表明两分量敏感结构具有设计运动方向刚度小、寄生运动方向刚度大、运动耦合小的特点,适于在超导重力梯度测量系统中应用.
- 超导 /
- 重力梯度 /
- 型综合 /
- 约束线图
Abstract: Based on constraint pattern, the type synthesis for sensing mechanism of superconductor gravity gradient was produced. The independent sensing mechanism of inline or cross component of gravity gradient was analyzed, and the freedoms of motion and constraint pattern of mechanism were deduced. The simultaneous sensing mechanism of two components was presented for the measurement application. The constraint type was determined by the freedoms of motion and constraint pattern and equivalent to flexible cylinder joint, which could be built by flexible elements according to parallel mechanism form. By means of modal emulation, it can be concluded that rigid rod with flexible spherical hinge on two ends of rod is applicable for the sensing mechanism of two components. The stiffness emulation results indicate that the stiffness of design motion is small, the stiffness of parasitic motion is large, and coupling of motions is little. It is proved that the simultaneous sensing mechanism of two components is appropriate for the measurement system of superconductor gravity gradient.
- superconductor /
- gravity gradient /
- type synthesis /
- constraint pattern

HTML全文

参考文献(10)

[1]	Patitsas S N.Stability analysis for axially-symmetric magnetic field levitation of a superconducting sphere [J].Physica C:Superconductivity and Its Applications,2011,471(1):12-18
[2]	南和礼.超导磁体设计基础[M].北京:国防工业出版社,2007 Nan Heli.Foundation of superconducting magnet design [M].Beijing:National Defense Industry Press,2007 (in Chinese)
[3]	Chan H A,Paik H J.Superconducting gravity gradiometer for sensitive gravity measurement.I.theory [J].Physical Review D:Particles and Fields,1987,35(12):3551-3571
[4]	Rogers M M,Huffman R E,Shearer C M.An investigation into the feasibility of using a modern gravity gradiometer instrument for passive aircraft navigation and terrain avoidance // Proceedings of the Institute of Navigation,National Technical Meeting.Anaheim,CA,United States:Institute of Navigation,2009:49-60
[5]	Moody M V,Paik H J.A superconducting gravity gradiometer for inertial navigation // Record-IEEE PLANS,Position Location and Navigation Symposium.Monterey,CA,United States:Institute of Electrical and Electronics Engineers Inc,2004:775-781
[6]	Moody M V,Paik H J,Canavan E R.Three-axis superconducting gravity gradiometer for sensitive gravity experiments [J].Review of Scientific Instruments,2002,73(11):3957-3974
[7]	贾明,杨功流.基于超导的三位置重力梯度轴向分量测量方法[J].中国惯性技术学报,2011,19(4):419-422 Jia Ming,Yang Gongliu.Measurement of inline-component of gravity gradient by three-position method based on superconductor [J].Journal of Chinese Inertial Technology,2011,19(4):419-422 (in Chinese)
[8]	Blanding D L.Exact constraint:machine design using kinematic principle [M].New York:ASME Press,1999
[9]	于靖军,裴旭,毕树生,等.柔性铰链机构设计方法的研究进展[J].机械工程学报,2010,46(13):2-13 Yu Jingjun,Pei Xu,Bi Shusheng,et al.State-of-arts of design method for flexure mechanisms [J].Journal of Mechanical Engineering,2010,46(13):2-13 (in Chinese)
[10]	于靖军,毕树生,宗光华.空间全柔性机构位置分析的刚度矩阵法[J].北京航空航天大学学报,2002,28(3):323-326 Yu Jingjun,Bi Shusheng,Zong Guanghua.Stiffness matrix method for displacement analysis of fully spatial compliant mechanisms [J].Journal of Beijing University of Aeronautics and Astronautics,2002,28(3):323-326 (in Chinese)