26 March 2015 Artificial heart for humanoid robot using coiled SMA actuators
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Abstract
Previously, we have presented the design and characterization of artificial heart using cylindrical shape memory alloy (SMA) actuators for humanoids [1]. The robotic heart was primarily designed to pump a blood-like fluid to parts of the robot such as the face to simulate blushing or anger by the use of elastomeric substrates for the transport of fluids. It can also be used for other applications. In this paper, we present an improved design by using high strain coiled SMAs and a novel pumping mechanism that uses sequential actuation to create peristalsis-like motions, and hence pump the fluid. Various placements of actuators will be investigated with respect to the silicone elastomeric body. This new approach provides a better performance in terms of the fluid volume pumped.
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Akshay Potnuru, Akshay Potnuru, Yonas Tadesse, Yonas Tadesse, } "Artificial heart for humanoid robot using coiled SMA actuators ", Proc. SPIE 9429, Bioinspiration, Biomimetics, and Bioreplication 2015, 94290R (26 March 2015); doi: 10.1117/12.2084133; https://doi.org/10.1117/12.2084133
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