Title :
Optimal model reduction of non-causal systems via least squares frequency fitting
Author :
Wang, J. ; Houlis, P. ; Sreeram, V. ; Liu, W.
Author_Institution :
Univ. of Western Australia, Perth
fDate :
7/1/2007 12:00:00 AM
Abstract :
A new model reduction method, based on frequency fitting, is proposed for single-input discrete-time singular (non-causal) systems. The reduced-order models are obtained by minimising the least square frequency response error between the original system and the reduced-order model. Finally, the method is illustrated by a numerical example and is compared with other related techniques.
Keywords :
discrete time systems; frequency response; least squares approximations; reduced order systems; least square frequency response; least squares frequency fitting; noncausal systems; optimal model reduction; reduced-order models; single-input discrete-time singular systems;
Journal_Title :
Control Theory & Applications, IET
DOI :
10.1049/iet-cta:20050406
