This paper will discuss the experimental evaluation of a structural control system designed using a combination of Frequency Weighted LQG and Maximum Entropy. The experimental implementation was performed on an experimental truss structure, the Sandia Truss, which is described in the paper. The control design model was obtained via experimental system identification using the eigensystem realization algorithm with data correlation. The control design used frequency weighting to stabilize the unstructured uncertainty of the system due to low signal-to-noise and uncertain system dynamics in various frequency ranges. Maximum entropy is used to provided robustness for structured uncertain system dynamics within the controller bandwidth. The experimental implementation of the controllers designed with this approach show the ability to design controllers with a specified bandwidth, gain stabilization of unstructured uncertainty, and robustness to structured uncertainty within the controller bandwidth.
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September 1997
Technical Papers
Design and Evaluation of Frequency Weighted LQG—Maximum Entropy Controllers on an Experimental Truss Structure
J. J. Allen,
J. J. Allen
Sandia National Laboratories, Albuquerque, NM 87185
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J. P. Lauffer
J. P. Lauffer
Sandia National Laboratories, Albuquerque, NM 87185
Search for other works by this author on:
J. J. Allen
Sandia National Laboratories, Albuquerque, NM 87185
J. P. Lauffer
Sandia National Laboratories, Albuquerque, NM 87185
J. Dyn. Sys., Meas., Control. Sep 1997, 119(3): 372-379 (8 pages)
Published Online: September 1, 1997
Article history
Received:
October 1, 1994
Online:
December 3, 2007
Citation
Allen, J. J., and Lauffer, J. P. (September 1, 1997). "Design and Evaluation of Frequency Weighted LQG—Maximum Entropy Controllers on an Experimental Truss Structure." ASME. J. Dyn. Sys., Meas., Control. September 1997; 119(3): 372–379. https://doi.org/10.1115/1.2801268
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