Abstract
AbstractThis article proposes a thrust equation model of two-degree-of-freedom oscillatory actuator considering its edge effect. The proposed thrust equation model clarifies that asymmetric permanent magnet flux linkage and inductance characteristics cause undesirable magnetic thrust and reluctance thrust, respectively.
Highlights
Linear oscillatory actuators (LOAs) have been used in a wide range of applications such as an electric shaver and an air compressor [1,2]
Various kinds of multi-degree-of-freedom (DOF) resonant actuators have been developed for further improvement of LOAs [3]
The authors have developed a twoDOF oscillatory actuator [4] driven by three-phase current and verified its effectiveness through 3D finite element analysis (FEA) and measurement
Summary
Linear oscillatory actuators (LOAs) have been used in a wide range of applications such as an electric shaver and an air compressor [1,2]. The authors have developed a twoDOF oscillatory actuator [4] driven by three-phase current and verified its effectiveness through 3D finite element analysis (FEA) and measurement. This actuator has linearly expanded structure of four-pole three-slot surface permanent magnet synchronous motors (SPMSMs). This actuator exhibits a specific property called the edge effect because its stator and mover have finite lengths. It is well-known that linear motors show the edge effect [5]. We clarify the thrust characteristics of the actuator under various conditions by using the proposed thrust equation model
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