Oscillatory actuators are expected for various applications such as entertainment systems, consumer products, and so on. In addition, the oscillatory motion is expanded to multiple-degrees-of-freedom. A three-degree-of-freedom linear oscillatory actuator (3DOF-LOA) has been developed. A conventional 3DOF-LOA needs five sets of coils for a three-degree-of-freedom motion, and the forces on each axis have interfered with each other. This article proposes a novel 3DOF-LOA with three sets of coils, and its forces on each axis do not interfere with each other. The magnetic structure and the operating principle of the proposed 3DOF-LOA are described. The force characteristics are calculated using a 3-D finite-element method. It is investigated that the proposed actuator can be driven three-axis by only three-coils, and has no interference of forces between each axis.

中文翻译：

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三自由度线性摆动执行器的设计与分析

振动致动器有望用于各种应用，例如娱乐系统、消费产品等。此外，振荡运动扩展到多个自由度。已开发出三自由度线性振荡致动器 (3DOF-LOA)。传统的 3DOF-LOA 需要五组线圈进行三自由度运动，并且每个轴上的力相互干扰。本文提出了一种具有三组线圈的新型 3DOF-LOA，其作用在每个轴上的力不会相互干扰。描述了所提出的 3DOF-LOA 的磁性结构和工作原理。力特性是使用 3-D 有限元方法计算的。研究表明，所提出的执行器只能由三个线圈驱动三轴，