Study on Multi-DOF Actuator for Improving Power Density

被引：1

作者：

Cho, Sooyoung ^{[1
]}

Lee, Ho Joon ^{[2
]}

Lee, Ju ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect Engn, Seoul 04763, South Korea

[2] Busan Inst Sci & Technol, Dept Elect Automatizat, Busan 46639, South Korea

来源：

ENERGIES | 2019年 / 12卷 / 21期

基金：

新加坡国家研究基金会;

关键词：

Halbach magnet array; multi-degree-of-freedom (DOF); multi-DOF actuator; power density; spherical actuator; ULTRASONIC MOTOR; DESIGN;

D O I：

10.3390/en12214204

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This study focuses on improving the power density of a spherical multi-degree-of-freedom (multi-DOF) actuator. A spherical multi-DOF actuator that can operate in three DOFs is designed. The actuator features a double air gap to reduce eddy current loss. However, a multi-DOF actuator driven by a single actuator exhibits low power density. Therefore, a Halbach magnet array is applied to improve the power density of a spherical multi-DOF actuator, and its output characteristics are compared with those of an existing spherical multi-DOF actuator via finite element analysis. Additionally, the output characteristics are analyzed based on changes in the coil pitch angle and magneto-motive force of the rotating winding. Furthermore, it is necessary for a spherical multi-DOF actuator to move to the command position. Hence, a stability analysis is performed to ensure that the spherical multi-DOF actuator is stably driven based on the command position.

引用

页数：14

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