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A novel differential shape memory alloy actuator for position control

  • Robert B. Gorbet and R. Andrew Russell

Summary

This paper discusses a novel design for a rotary differential NiTi shape memory alloy actuator, which incorporates a mobile heat sink. The new mechanism is described in detail, and its performance in a position control system is compared with that of the same actuator without heat sink. Experimental results are presented which show an improvement in actuator response time, as well as closed-loop bandwidth. The design of the mechanism gives enhanced performance, without the increased power consumption associated with fixed heat sinks.

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A novel differential shape memory alloy actuator for position control

  • Robert B. Gorbet and R. Andrew Russell

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