Electronic instrumentation for the characterization of a rotary thermoelectric motor driven by shape memory alloy springs

Sobrinho, José Marques Basílio; Cunha, Maxsuel Ferreira; Souto, Cícero da Rocha; Silva, Simplício Arnaud da; Santos, Alexsandro José Virgínio dos; Catunda, S.Y.C.

doi:10.1109/i2mtc.2017.7969933

Cited by 1 publication

(2 citation statements)

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“…The literature reports research (Basílio Sobrinho, 2017) dealing with the electronic instrumentation for the characterization of a thermoelectric motor using SMA minisprings as an active element of the actuator. In this work, besides designing the thermoelectric motor, power circuits were developed to activate each SMA actuator.…”

Section: Introductionmentioning

confidence: 99%

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Electronic Instrumentation for Shape Memory Alloy Actuators

Lopes

Cunha

Sobrinho³

et al. 2020

Anais Do Congresso Brasileiro De Automática 2020

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Shape memory alloy (SMA) actuators have been increasingly found applications due to their low weight and high power capacity. Additionally they are able to function as a sensor. Upon phase transformation, the material changes its electrical resistance. Phase transformation in SMAs occurs either by loading or heating the material. Since SMAs materials are usually metals, heat can be produced by passing an electric current through the alloy. This idea in mind, the present work reports the development of electronic circuits for power supply, current measurement and voltage measurement for shape memory alloy actuators. For validation of the operation of the designed circuits, a NiTi helical spring type alloy actuator was tested. The actuator was mounted on a mechanical platform; it was possible to determine its thermal behavior and force generation. Characteristic operation curves of the helical spring type actuator are presented.

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Section: Introductionmentioning

confidence: 99%

“…In this work, besides designing the thermoelectric motor, power circuits were developed to activate each SMA actuator. Control software and pulse width modulation were used for activating the actuators (Basílio Sobrinho, 2017).…”

Section: Introductionmentioning

confidence: 99%