Shape memory alloys and fiber optics for flexible structure control

David G. Wilson; John R. Anderson; Raymond D. Rempt; Roy Ikegami

doi:10.1117/12.24850

Translator Disclaimer

1 December 1990 Shape memory alloys and fiber optics for flexible structure control

David G. Wilson, John R. Anderson, Raymond D. Rempt, Roy Ikegami

Author Affiliations +

Proceedings Volume 1370, Fiber Optic Smart Structures and Skins III; (1990) https://doi.org/10.1117/12.24850
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

This work investigates the development of Shape Memory Alloy (SMA) actuators and a fiber-optic Mach- Zehnder interferometric dynamic motion sensor as components of an active vibration control system. The test set-up consisted of a graphite-epoxy flexible cantilever beam with distributed SMA wires and optical fibers attached along both sides. A constant amplitude dead-band control algorithm was used to provide a rate feedback force to actively control transient vibrations. The SMA actuators were also used to demonstrate static shape control. The settling time of the beam was reduced by more than a factor of 24 through the use of the SMA actuators and fiber optic dynamic motion sensor. Analytical models were developed for the integrated structure/actuator/sensor system which helped understand the dynamic effects and the results correlated well with the experimental results. This investigation demonstrated the feasibility ofusing SMA actuators and fiber optic dynamic motion sensor for control of flexible structures. The work described in this paper was sponsored by the Astronautics Laboratory AL(AFSC) as a part of the "Advanced Composites with Embedded Sensors and Actuators (ACESA)" program.

Citation Download Citation

David G. Wilson, John R. Anderson, Raymond D. Rempt, and Roy Ikegami "Shape memory alloys and fiber optics for flexible structure control", Proc. SPIE 1370, Fiber Optic Smart Structures and Skins III, (1 December 1990); https://doi.org/10.1117/12.24850

ACCESS THE FULL ARTICLE