Comparison of Classical with Robust Control for Smart Structures
Smart structures is now a vigorous area of study. One type of smart structure employs shape memory alloys, such as Nitinol, in the form of thin wire actuators to provide enhanced damping. To the authors knowledge, the only control algorithm that has been implemented heretofore has been a simple on-off control law. In this study, other control algorithms are employed, ranging from classical to a robust controller based on the LQG/LTR algorithm, and their relative effectiveness is compared. The robust control algorithm gave the best active damping enhancement. Two mechanical systems are studied. The first is an aluminium cantilever beam for which the free-vibration damping of the fundamental mode was enhanced. The second system studied is a three-mass system with its three natural frequencies below 3 Hz.
S. Rhee and L. R. Koval, "Comparison of Classical with Robust Control for Smart Structures," Smart Materials and Structures, Institute of Physics - IOP Publishing, Jan 1993.
The definitive version is available at http://dx.doi.org/10.1088/0964-1726/2/3/004
Mechanical and Aerospace Engineering
Article - Journal
© 1993 Institute of Physics - IOP Publishing, All rights reserved.