Abstract
The problem of deriving reduced-order models of a higher-dimensional system from its state-space description is considered under the constraint that the model-reduction procedure should not involve the evaluation of system eigenvalues, should not involve any optimisation algorithm and should yield a stable lower-order model for a stable system. The Routh-approximant modelling procedure in the frequency domain has the above characteristics. This paper presents a time-domain adaptation of the Routh-approximant frequency-domain modelling procedure to achieve the above objectives for s.i.s.o. systems. The lower-order time-domain model matrices are derived by a suitable truncation of the original system matrices in their γ-δ canonic structure. The aggregation matrix relating the system and model state vectors is also derived. A numerical example is included to illustrate the procedure.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Proceedings of the Institution of Electrical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
