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Continuous-time control model validation using finite experimental data

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2 Author(s)
R. Smith ; Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA ; G. E. Dullerud

The application of robust control theory requires models containing unknown, bounded perturbations and unknown, bounded input signals. Model validation is a means of assessing the applicability of a given model with respect to experimental data. This paper develops a theoretical framework, and a computational solution, for the model validation problem in the case where the model, including unknown perturbations and signals, is given in the continuous time domain, yet the experimental datum is a finite, sampled signal. The continuous nature of the unknown components is treated directly with a sampled data lifting theory. This gives results which are valid for any sample period and any datum length. Explicit calculation of whether sufficient data for invalidation has been obtained arises naturally in this framework. A common class of robust control models is treated and leads to a convex matrix optimization problem. A simulation example illustrates the approach

Published in:

IEEE Transactions on Automatic Control  (Volume:41 ,  Issue: 8 )