Reducing the Power Consumption of a Shape Memory Alloy Wire Actuator Drive by Numerical Analysis and Experiment

Yamano, Akio; Shintani, Atsuhiko; Ito, Tomohiro; Nakagawa, Chihiro

doi:10.1109/tmech.2018.2836352

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…A microflow valve and a microclamp were designed to demonstrate the application potential of the actuator. Since then, several studies on SMA actuator–based rotary motors were published (Kuribayashi, 1997, 2003; Lan et al, 2009; Nespoli et al, 2010a; Reynaerts and Brussel, 1998; Song, 2007; Tanaka and Yamada, 1991; Yamano et al, 2010; Yuan et al, 2018; Zhang and Yan, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…A microflow valve and a microclamp were designed to demonstrate the application potential of the actuator. Since then, several studies on SMA actuator-based rotary motors were published (Kuribayashi, 1997(Kuribayashi, , 2003Lan et al, 2009;Nespoli et al, 2010a;Reynaerts and Brussel, 1998;Song, 2007;Tanaka and Yamada, 1991;Yamano et al, 2010;Yuan et al, 2018;Zhang and Yan, 2012). Sharma et al (2008aSharma et al ( , 2008bSharma et al ( , 2008c) constructed a continuous and bidirectional rotating motor where three SMA wires are connected to an eccentric axis producing motion through the alternate activation of these wires.…”

Section: Introductionmentioning

confidence: 99%

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A compact rotary motor actuated by shape memory alloy mini springs

Sobrinho

Cunha

Emiliavaca

et al. 2020

Journal of Intelligent Material Systems and Structures

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Shape memory alloys have recently gained attention for applications in motor driving components. The most expressive advantage of shape memory alloy components in that type of application is the high torque to motor weight ratio. Considering the importance of these studies, this article presents the design, manufacture, and theoretical and experimental analyses of a rotary motor driven by Ni–Ti shape memory alloy mini springs. The adopted motion mechanism allows the motor to run in continuous and bidirectional rotation mode, where speed and torque are determined by a drive sequence. A simplified analytical model was implemented, considering the thermomechanical characteristics of the shape memory alloy springs. Experimental tests with and without electrical drives were performed using properly designed electronic measurement instrumentation. The principal scientific contribution of this work is the demonstration of the motor’s functionality and torque generation. An energy density index of 1.41 × 10−3 Nmm/mm3 was attained, which is higher to those of other similarly constructed motors in the literature.

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