Compact Modular Cycloidal Motor with Embedded Shape Memory Alloy Wires

Title
Compact Modular Cycloidal Motor with Embedded Shape Memory Alloy Wires
Authors
김기훈황동현인용석
Keywords
Cycloidal motor; Rotary actuator; Smart actuator; Shape memory alloy; Transmission; 부서평가 반영완료 (2017-10)
Issue Date
2018-05
Publisher
IEEE transactions on industrial electronics
Citation
VOL 65, NO 5-4038
Abstract
Abstract— In this study, we develop a rotary motor using embedded shape memory alloy (SMA) wires, with the aim of realizing a novel compact and modular motor that can generate high-torque bidirectional continuous rotation. Thus, we focus on designing the motion transmission mechanism and torque amplifier of the motor. The designed motion transmission mechanism that functions to convert the contraction/expansion of the SMA wires to rotational motion enables the motor to generate continuous rotation with relatively short-length SMA wires. Additionally, a double-disc cycloidal speed reducer designed as the torque amplifier allows the motor to reliably generate high torque with a compact structure due to its simple configuration, size variability, and torque amplification functionality. One of the advantages of the motor is that an actuating module could be additionally incorporated into the motor to achieve higher torque. In this case, the overall size and weight of the motor are marginally increased although the output torque capacity almost doubles. Hence, the energy density of the motor significantly increases. The study describes the main concept, operating principle, design, and experimental results of the output torque capacity, positioning characteristics, and frequency response of the proposed motor.
URI
http://pubs.kist.re.kr/handle/201004/66331
ISSN
0278-0046
Appears in Collections:
KIST Publication > Article
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