Simplified robust control for nonlinear uncertain systems: a method of projection and online estimation |
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Authors: | Apiwat Saengdeejing |
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Affiliation: | a Automated Imaging Systems Inc., Orlando, FL 32816, USA b Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, USA |
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Abstract: | Robust control based on an online estimation of uncertainty is presented for a class of nonlinear uncertain systems. The estimation is done via a robust observer after the uncertainty vector is projected onto a one-dimensional subspace. The proposed combination of dynamics projection and online estimation is to relax the knowledge about the size of uncertainty and required in the robust control design, to make robust control less conservative while being effective, and to ensure robust stability without undue complexity. |
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Keywords: | Nonlinear robust control Subspace projection Uncertainty estimation |
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