Title :
Efficient model reduction of linear time-varying systems via compressed transient system function
Author :
Gad, Emad ; Nakhla, Michel
Author_Institution :
Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada
Abstract :
This paper presents a new approach for model-order reduction of linear time varying system based on expanding the time-varying system in the right half plane of the s-domain. The proposed algorithm is developed through introducing Krylov subspace-based reduction to time-varying transfer functions. The proposed algorithm does not require solution of large system of equations to construct a basis for the time-varying moments. Instead, it computes such a basis through time-domain integration of the corresponding linear time-varying differential algebraic equations. Numerical experiments show that expanding in the right-half plane compresses the transient phase of the response of these equations by several orders of magnitude
Keywords :
circuit simulation; differential equations; linear systems; reduced order systems; time-domain analysis; time-varying systems; transfer functions; Krylov subspace-based reduction; compressed transient system function; hierarchical system-level simulation; linear time-varying differential algebraic equations; linear time-varying systems; model reduction; right-half plane; s-domain; time-domain integration; time-varying moments; time-varying transfer functions; Circuit simulation; Differential algebraic equations; Linear circuits; RF signals; Radio frequency; Reduced order systems; Steady-state; Time domain analysis; Time varying systems; Transfer functions;
Conference_Titel :
Design, Automation and Test in Europe Conference and Exhibition, 2002. Proceedings
Conference_Location :
Paris
Print_ISBN :
0-7695-1471-5
DOI :
10.1109/DATE.2002.998409