On globally stable adaptive control providing l 1 tracking performance for linear discrete-time systems |
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| Authors: | Miloje S Radenkovi? |
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| Affiliation: | Department of Electrical Engineering, University of Colorado Denver , Denver, CO, USA |
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| Abstract: | Existing adaptive control algorithms at best guarantee that the tracking error is a l 2 sequence. This paper presents globally stable adaptive control algorithms for linear discrete-time systems providing l 1 tracking performance. Two algorithms with different degree of complexity are proposed, one for the case of known control directions, and a separate algorithm for the case of unknown control directions. It is demonstrated that in both cases the tracking error is l 1 sequence, while the input and output signals are uniformly bounded. |
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| Keywords: | l 1-adaptive performance global stability parameter estimates convergence unknown control directions |
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