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Date of Award


Document Type

Campus Access Master's Thesis

Degree Name

Master of Science in Civil Engineering (MS)

Administrative Home Department

Department of Civil and Environmental Engineering

Advisor 1

Qingli Dai

Committee Member 1

Hyungchul Yoon

Committee Member 2

Bo Chen


A shape memory alloy actuated wire actuated mechanism for tab rotation was designed, manufactured and tested. Antagonistic SMA wires are applied for activating the actuation to enable the tab rotate in both directions. Locking system and rotation sensor are comprised in this design. The system is supervised by a feedback rotation controller. Devices were fabricated with the shape memory alloy wire clamping mechanism and actuation with locking functions. The temperature-voltage relations of clamped SMA wires were predicted with an analytical model based on the thermomechanical study of NiTi done by Epps et al.[1] and Singh et al.[2]. The PID feedback controller was designed with optimized parameters to locate controlled voltage for precise tab angle actuation. The controller operation was tested with LabVIEW® System Design Software. With the feedback control, the relative differences between actuation angle and target angle were analyzed. Further investigation on this SMA –based tab rotation actuation were discussed including operation speed and accuracy.