This paper proposes a robust filtered basis functions approach for feedforward tracking of linear time invariant systems with dynamic uncertainties. Identical to the standard filtered basis functions (FBF) approach, the robust FBF approach expresses the control trajectory as a linear combination of user-defined basis functions with unknown coefficients. The basis functions are forward filtered using a model of the plant and their coefficients are selected to minimize tracking errors. The standard FBF and robust FBF approaches differ in the filtering process. The robust FBF approach uses an optimal robust filter which is based on minimization of a frequency domain based error cost function over the dynamic uncertainty, whereas, the standard FBF approach uses the nominal model. Simulation examples and experiments on a desktop 3D printer are used to demonstrate significantly more accurate tracking of uncertain plants using robust FBF compared with the standard FBF.
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ASME 2018 Dynamic Systems and Control Conference
September 30–October 3, 2018
Atlanta, Georgia, USA
Conference Sponsors:
- Dynamic Systems and Control Division
ISBN:
978-0-7918-5191-3
PROCEEDINGS PAPER
Robust Filtered Basis Functions Approach for Feedforward Tracking Control Available to Purchase
Keval S. Ramani,
Keval S. Ramani
University of Michigan, Ann Arbor, MI
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Chinedum E. Okwudire
Chinedum E. Okwudire
University of Michigan, Ann Arbor, MI
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Keval S. Ramani
University of Michigan, Ann Arbor, MI
Chinedum E. Okwudire
University of Michigan, Ann Arbor, MI
Paper No:
DSCC2018-9196, V003T35A003; 8 pages
Published Online:
November 12, 2018
Citation
Ramani, KS, & Okwudire, CE. "Robust Filtered Basis Functions Approach for Feedforward Tracking Control." Proceedings of the ASME 2018 Dynamic Systems and Control Conference. Volume 3: Modeling and Validation; Multi-Agent and Networked Systems; Path Planning and Motion Control; Tracking Control Systems; Unmanned Aerial Vehicles (UAVs) and Application; Unmanned Ground and Aerial Vehicles; Vibration in Mechanical Systems; Vibrations and Control of Systems; Vibrations: Modeling, Analysis, and Control. Atlanta, Georgia, USA. September 30–October 3, 2018. V003T35A003. ASME. https://doi.org/10.1115/DSCC2018-9196
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