磁流体动力学陀螺磁场均匀性分析及优化设计  

Analysis and Optimization Design of Magnetofluid Gyroscope

作　　者：梁思夏 李醒飞[1] 徐梦洁[2] 王丽萍[1] 张少强[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072 [2]合肥工业大学仪器科学与光电工程学院,合肥230009

出　　处：《机械科学与技术》2016年第8期1233-1240,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金青年科学基金项目(61304243)资助

摘　　要：为了改善磁流体动力学陀螺的低频响应,提出了将磁流体动力泵技术应用于磁流体动力学陀螺研制的方法,并用ANSYS对其磁路结构进行三维仿真。仿真结果表明,磁感应强度不均匀度远大于10%,严重影响传感器的精度。通过有限元仿真方法分析不同永磁体对工作间隙磁场的不同影响,并在结构设计中去除对磁场不均匀度影响较大的永磁体,最后通过合理的磁路设计方法,在实现工作间隙所需磁场的同时降低磁场的不均匀度。仿真结果表明:磁感应强度不均匀度小于10%。In order to improve the low frequency response of magnetofluid gyroscope,a method is proposed that apply electromagnetic pump technique to the research of magnetofluid gyroscope. The structure of its magnetic circuit is simulated three-dimensionally with ANSYS software and the simulation results show that the unevenness of magnetic flux density is much greater than 10%,which seriously affect the accuracy of the sensor. The different effects on the working gap magnetic field of different permanent magnets is simulated with the finite element method. And then the permanent magnet which has great influence on the homogeneity of magnetic field is removed in the structure design.Finally,the magnetic field of the working gap is properly designed and the inhomogeneity of the magnetic field is reduced. The simulation results show that the unevenness of magnetic flux density is less than 10%.

关 键 词：磁流体动力学陀螺 磁流体动力泵 磁路结构 ANSYS仿真 

分 类 号：TH73[机械工程—仪器科学与技术]