Mathematics – Optimization and Control
Scientific paper
2010-12-15
Automatica 43 (2007) 1329-1338
Mathematics
Optimization and Control
Scientific paper
10.1016/j.automatica.2007.01.020
We investigate the parametrization issue for discrete-time stable all-pass multivariable systems by means of a Schur algorithm involving a Nudelman interpolation condition. A recursive construction of balanced realizations is associated with it, that possesses a very good numerical behavior. Several atlases of charts or families of local parametrizations are presented and for each atlas a chart selection strategy is proposed. The last one can be viewed as a nice mutual encoding property of lossless functions and turns out to be very efficient. These parametrizations allow for solving optimization problems within the fields of system identification and optimal control.
Marmorat Jean-Paul
Olivi Martine
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