永磁体

永磁体是铁磁性或亚铁磁性材料，在暴露于外部磁场后仍能保持其磁化，从而产生稳定的磁通。在振动电机转子中，它们被精确定位以与电磁线圈相互作用，通过交替的吸引和排斥力将电能转换为机械振动。这些磁体提供电机运行所需的基础磁场，无需持续的电励磁，从而确保能效。

永磁体基于其材料结构内磁畴的排列而工作，产生恒定磁场。在振动电机转子中，当交流电通过电磁线圈时，会产生一个变化的磁场，该磁场与永磁体的固定磁场相互作用。这种相互作用产生振荡力（洛伦兹力），导致电机的运动部件振动，将电信号转换为机械运动，用于触觉反馈或振动警报等应用。

Permanent magnets operate based on the alignment of magnetic domains within their material structure, producing a constant magnetic field. In a vibration motor core, when an alternating current passes through the electromagnetic coils, it creates a varying magnetic field that interacts with the permanent magnet's fixed field. This interaction generates oscillating forces (Lorentz forces) that cause the motor's moving parts to vibrate, translating electrical signals into mechanical motion for applications like haptic feedback or vibration alerts.