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Parameterization of positive-real transfer functions with fixed poles

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1 Author(s)
Dumitrescu, B. ; Tampere Int. Center for Signal Process., Tampere Univ. of Technol., Finland

A parameterization of continuous-time passive systems (positive real transfer functions) with given poles is proposed. This parameterization has a minimum number of parameters and is suited to convex optimization, especially for semidefinite programming. As an example, we show how to find the best approximation of a stable transfer function with a positive real one, with the same poles

Published in:
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on  (Volume:49 ,  Issue: 4 )

Date of Publication: Apr 2002

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