ABSTRACT In hybrid reluctance actuators, the achievable closed-loop system bandwidth is affected by the eddy currents and hysteresis in the ferromagnetic components and the mechanical resonance modes. Such effects must be accurately predicted to achieve high performance via feedback control. Therefore, a multiphysics electro-mechanical finite element model is proposed in this paper to compute the dynamics of a 2-DoF hybrid reluctance actuator. An electromagnetic simulation is adopted to compute the electromagnetic dynamics and the actuation torque, which is employed as input for a structural dynamic simulation computing the electro-mechanical frequency response function. For model validation, the simulated and measured frequency response plots are compared for two actuators with solid and laminated outer yoke, respectively. In both cases, the model accurately predicts the measurement results, with a maximum relative phase error of 1.7% between the first resonance frequency and 1 kHz and a relative error of 1.5% for the second resonance frequency..

中文翻译：

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用于计算混合磁阻致动器机电动力学的多物理场有限元模型

摘要 在混合磁阻致动器中，可实现的闭环系统带宽受涡流和铁磁元件中的磁滞以及机械谐振模式的影响。必须准确预测此类影响才能通过反馈控制实现高性能。因此，本文提出了一个多物理场机电有限元模型来计算 2-DoF 混合磁阻致动器的动力学。采用电磁仿真来计算电磁动力学和致动扭矩，将其用作计算机电频率响应函数的结构动力学仿真的输入。对于模型验证，分别比较了两个具有实心和层压外轭的执行器的模拟和测量的频率响应图。在这两种情况下，