| 廖灿杰,韦峻峰.包含外壳磁阻的微型平衡电枢换能器仿真模型的阻抗和振动分析*[J].,2023,42(1):42-50 |
| 包含外壳磁阻的微型平衡电枢换能器仿真模型的阻抗和振动分析* |
| Impedance and vibration analysis of the simulation model of the miniature balanced armature transducer including the magnetoresistance of the shell |
| 投稿时间：2021-10-21 修订日期：2022-12-26 |
| 中文摘要: |
| 现有的“E”型平衡电枢等效磁路模型仿真研究通常不考虑金属外壳磁阻带来的影响。为了解决平衡电枢换能器中因金属外壳和平衡电枢紧密接触带来的非线性磁阻问题，在现有的平衡电枢换能器等效磁路模型上加入了外壳磁阻影响。分析等效磁路模型磁通部分和力学部分的状态空间方程在不同参数条件下的仿真结果，总结不同参数对该模型阻抗和振膜位移的影响情况。通过仿真对比，外壳磁阻对平衡电枢换能器位移频率响应曲线的影响为1~3dB。对于组装后包含金属外壳的平衡电枢耳机、助听器产品降低频率响应曲线偏差具有一定的指导意义。 |
| 英文摘要: |
| In the existing "E"-type balanced armature equivalent magnetic circuit model simulation research, the influence of the magnetic resistance of the metal shell is usually not considered. In order to solve the non-linear magnetic resistance problem caused by the close contact between the metal shell and the balanced armature in the balanced armature transducer, based on the existing equivalent magnetic circuit model of the balanced armature transducer, this study introduced the consideration of the shell magnetic resistance. It analyzed the simulation results of the magnetic flux part and the state space equation of the mechanical part of the equivalent magnetic circuit model under different parameter conditions, and summarized the influence of different parameters on the impedance and diaphragm displacement of the model. Through simulation and comparison, it indicated that the influence of the shell reluctance on the displacement frequency response curve of the balanced armature transducer is 1~3dB. This study is considered of certain guiding significance for the frequency response curve deviation of the balanced armature earphones and hearing aid products including the metal shell design after assembly. |
| DOI：10.11684/j.issn.1000-310X.2023.01.006 |
| 中文关键词: 平衡电枢换能器 金属外壳磁阻 非线性磁路分析 状态空间法 |
| 英文关键词: Balance-Armature Transducer Metal Case Reluctance Nonlinearities Magnetic Circuit State space method |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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