文章摘要
基于正交试验的永磁有刷直流 微电机齿槽转矩波动的稳健设计
Robust design for the cogging torque fluctuation of permanent magnet brush DC micro motor based on orthogonal experiment
  
DOI:
中文关键词: 永磁直流微电机  正交试验  稳健设计  望小特性
英文关键词: permanent magnet DC micro motor  orthogonal experiment  robust design  smaller the better characteristic
基金项目:国家自然科学基金资助项目(51075141);湖南省教育厅科学研究一般项目(11C0237)
作者单位
胡佳1,文泽军1,张用万2,李界华3 1.湖南科技大学 机械设备健康维护湖南省重点实验室湖南 湘潭 411201
2.深圳万至达电机制造有限公司广东 深圳 518106
3.湖南城建职业技术学院 设备工程系湖南 湘潭 411101 
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中文摘要:
      针对齿槽转矩波动影响电机控制精度的问题,提出了基于正交试验的永磁直流微电机齿槽转矩稳健设计方法.以永磁有刷直流微电机为对象,建立基于有限元软件ANSYS的电机二维静态磁场分析模型.将电机齿槽转矩波动幅度作为望小特性,考虑齿楔角误差、气隙长度偏差、计算矫顽力偏差的噪声因素影响下,综合优化齿宽、齿楔角、槽底半径、永磁体中心角和永磁体计算矫顽力.将优化结果与原始设计方案作对比分析,结果表明:与原始设计方案相比,稳健设计后的齿槽转矩波动幅度的信噪比提高了43.5%,因此,电机齿槽转矩的波动幅值对外界干扰的影响更加稳健.
英文摘要:
      According to the problem of motor control precision caused by the cogging torque fluctuation, a robust design method of permanent magnet DC micro motor cogging torque, which based on orthogonal experiment, was presented. For permanent magnet brush DC micro motor, a 2D static magnetic field model of micro motor was established based on finite element software ANSYS. Taking noise factor such as tooth wedge angle error, and air gap length error, and calculated coercivity deviation into account, tooth width, tooth wedge angle, radius of slot bottom, permanent magnet center angle and calculation coercivity of permanent magnet were optimized synthetically in the condition of cogging torque fluctuation as smaller the better characteristic. Optimization result was analyzed by comparing to original scheme, the result show that noise signal ratio of fluctuation amplitude of cogging torque increase by 43.5% for robust design. Therefore, fluctuation amplitude of cogging torque has a better robust for external disturbance.
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