This paper presents the design procedure and experimental results of a high performance adaptive augmentation technique applied to a controller derived based on linear quadratic methods. The Quanser two degrees-of-freedom (2DOF) helicopter was chosen as the experimental platform on which these controllers were implemented. The paper studies the implementation of each of these controllers standalone as well as in the augmented scheme, and discusses its performance and robustness for cases with parametric uncertainties, and unmodeled dynamics. An attempt is made to combine linear quadratic tracker's reliability with the adaptive augmentation's robustness toward modeling uncertainties. It is found that appropriate tuning of parameters in the adaptive framework is key to its performance and thus the process of choosing the parameters is elaborated along with guidelines for choosing a reference model. Tuning considerations for controller implementation on the experimental setup as compared to the same on the numerical model are also addressed. The experiments performed on this system serve as a suitable research test and evaluation basis for robotics and flight control applications.
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June 2015
Technical Briefs
Experimental Verification of Linear and Adaptive Control Techniques for a Two Degrees-of-Freedom Helicopter
Pavan Nuthi,
Pavan Nuthi
Mechanical and Aerospace Engineering,
e-mail: pavankumar.nuthinagavenkatas@mavs.uta.edu
University of Texas at Arlington
,Arlington, TX 76019
e-mail: pavankumar.nuthinagavenkatas@mavs.uta.edu
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Kamesh Subbarao
Kamesh Subbarao
Associate Professor
Mechanical and Aerospace Engineering,
e-mail: subbarao@uta.edu
Mechanical and Aerospace Engineering,
University of Texas at Arlington
,Arlington, TX 76019
e-mail: subbarao@uta.edu
Search for other works by this author on:
Pavan Nuthi
Mechanical and Aerospace Engineering,
e-mail: pavankumar.nuthinagavenkatas@mavs.uta.edu
University of Texas at Arlington
,Arlington, TX 76019
e-mail: pavankumar.nuthinagavenkatas@mavs.uta.edu
Kamesh Subbarao
Associate Professor
Mechanical and Aerospace Engineering,
e-mail: subbarao@uta.edu
Mechanical and Aerospace Engineering,
University of Texas at Arlington
,Arlington, TX 76019
e-mail: subbarao@uta.edu
Contributed by the Dynamic Systems Division of ASME for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received December 19, 2013; final manuscript received November 22, 2014; published online January 27, 2015. Assoc. Editor: Yang Shi.
J. Dyn. Sys., Meas., Control. Jun 2015, 137(6): 064501 (6 pages)
Published Online: June 1, 2015
Article history
Received:
December 19, 2013
Revision Received:
November 22, 2014
Online:
January 27, 2015
Citation
Nuthi, P., and Subbarao, K. (June 1, 2015). "Experimental Verification of Linear and Adaptive Control Techniques for a Two Degrees-of-Freedom Helicopter." ASME. J. Dyn. Sys., Meas., Control. June 2015; 137(6): 064501. https://doi.org/10.1115/1.4029273
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