Proof of concept of a novel SMA cage actuator

Christopher W. Deyer; Diann E. Brei

doi:10.1117/12.429661

14 June 2001 Proof of concept of a novel SMA cage actuator

Christopher W. Deyer, Diann E. Brei

Proceedings Volume 4332, Smart Structures and Materials 2001: Industrial and Commercial Applications of Smart Structures Technologies; (2001) https://doi.org/10.1117/12.429661
Event: SPIE's 8th Annual International Symposium on Smart Structures and Materials, 2001, Newport Beach, CA, United States

Abstract

Numerous industrial applications that currently utilize expensive solenoids or slow wax motors are good candidates for smart material actuation. Many of these applications require millimeter-scale displacement and low cost; thereby, eliminating piezoelectric technologies. Fortunately, there is a subset of these applications that can tolerate the slower response of shape memory alloys. This paper details a proof-of-concept study of a novel SMA cage actuator intended for proportional braking in commercial appliances. The chosen actuator architecture consists of a SMA wire cage enclosing a return spring. To develop an understanding of the influences of key design parameters on the actuator response time and displacement amplitude, a half-factorial 2⁵ Design of Experiment (DOE) study was conducted utilizing eight differently configured prototypes. The DOE results guided the selection of the design parameters for the final proof-of-concept actuator. This actuator was built and experimentally characterized for stroke, proportional control and response time.

Citation Download Citation

Christopher W. Deyer and Diann E. Brei "Proof of concept of a novel SMA cage actuator", Proc. SPIE 4332, Smart Structures and Materials 2001: Industrial and Commercial Applications of Smart Structures Technologies, (14 June 2001); https://doi.org/10.1117/12.429661

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