大位移角振动台的气隙磁场动静态特性分析
发布时间：2019-03-04 17:43
【摘要】：针对电机驱动式角振动台气隙磁场不均匀和输出大位移时波形失真大的问题,提出了一种径向磁通磁路结构的大位移角振动台,对其气隙磁场动静态特性进行优化分析。基于等效磁化强度法,在极坐标系下建立气隙磁感应强度的解析表达式,通过有限元法验证该方法的有效性,进一步分析了永磁体厚度、永磁体扇形角及气隙厚度对静态气隙磁场的影响规律;通过瞬态有限元法仿真分析了0.01、0.1和1 Hz 3个频率点上外磁环固定不动而永磁体和内磁芯转动的气隙磁场动态特性,定量分析了相对运动对气隙磁感应强度的影响规律;将优化后的磁路参数用于大位移角振动台样机中,测试结果表明,气隙平均磁感应强度及其分布规律和理论计算结果相吻合;研究方法对角振动台径向磁通磁路的理论分析与优化设计具有重要意义。
[Abstract]:Aiming at the problems of non-uniform air-gap magnetic field and large waveform distortion of motor-driven angular vibration table, a large displacement vibration table with radial flux and magnetic circuit structure is proposed, and the dynamic and static characteristics of air-gap magnetic field are optimized and analyzed. Based on the equivalent magnetization method, the analytical expression of air gap magnetic induction intensity is established in polar coordinate system. The validity of the method is verified by finite element method, and the thickness of permanent magnet is further analyzed. The influence of fan angle and air gap thickness on static air gap magnetic field; The dynamic characteristics of air gap magnetic field with fixed external magnetic ring and rotation of permanent magnet and inner magnetic core at three frequency points (0.01, 0.1 and 1 Hz) are simulated by transient finite element method, and the influence of relative motion on air gap magnetic induction intensity is quantitatively analyzed. The optimized magnetic circuit parameters are applied to the prototype of the vibration table with large displacement angle. The test results show that the air gap average magnetic induction intensity and its distribution are in good agreement with the theoretical calculation results. The research method is of great significance to the theoretical analysis and optimal design of radial flux and magnetic circuit of angular vibrator.
【作者单位】： 中国计量大学工业与商贸计量技术研究所;浙江大学浙江省先进制造技术重点实验室;
【基金】：国家自然科学基金(51375443) 国家重大仪器设备开发专项(2013YQ470765) 浙江省自然科学基金杰出青年基金(LR12E05001)项目资助
【分类号】：TB534.2
，
本文编号：2434483
[Abstract]:Aiming at the problems of non-uniform air-gap magnetic field and large waveform distortion of motor-driven angular vibration table, a large displacement vibration table with radial flux and magnetic circuit structure is proposed, and the dynamic and static characteristics of air-gap magnetic field are optimized and analyzed. Based on the equivalent magnetization method, the analytical expression of air gap magnetic induction intensity is established in polar coordinate system. The validity of the method is verified by finite element method, and the thickness of permanent magnet is further analyzed. The influence of fan angle and air gap thickness on static air gap magnetic field; The dynamic characteristics of air gap magnetic field with fixed external magnetic ring and rotation of permanent magnet and inner magnetic core at three frequency points (0.01, 0.1 and 1 Hz) are simulated by transient finite element method, and the influence of relative motion on air gap magnetic induction intensity is quantitatively analyzed. The optimized magnetic circuit parameters are applied to the prototype of the vibration table with large displacement angle. The test results show that the air gap average magnetic induction intensity and its distribution are in good agreement with the theoretical calculation results. The research method is of great significance to the theoretical analysis and optimal design of radial flux and magnetic circuit of angular vibrator.
【作者单位】： 中国计量大学工业与商贸计量技术研究所;浙江大学浙江省先进制造技术重点实验室;
【基金】：国家自然科学基金(51375443) 国家重大仪器设备开发专项(2013YQ470765) 浙江省自然科学基金杰出青年基金(LR12E05001)项目资助
【分类号】：TB534.2
，
本文编号：2434483
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