ncku-talk2012-12-14

NCTS(South)/ NCKU Math Colloquium

DATE 2012-12-14　14:00-15:00

PLACE R204, 2F, NCTS, NCKU

SPEAKER 李勇達教授 (Prof. Yung-Ta Li)（輔仁大學數學系）

TITLE Structure-Preserving Model Reduction Using a Projection Formulation

ABSTRACT In this talk, we consider macromodelling second-order linear time invariant dynamical systems with single-input-single-output. Recently, a second-order structure preserving Krylov technique was presented in [1]. We will show that the technique may suffer from numerical instability under some conditions. We propose a new strategy to avoid the instability issue. Furthermore, we discuss a pole assignment problem arising from stabilizing reduced order models.

NCTS(South)/ NCKU Math Colloquium

DATE	2012-12-14　14:00-15:00

PLACE	R204, 2F, NCTS, NCKU

SPEAKER	李勇達教授 (Prof. Yung-Ta Li)（輔仁大學數學系）

TITLE	Structure-Preserving Model Reduction Using a Projection Formulation

ABSTRACT	In this talk, we consider macromodelling second-order linear time invariant dynamical systems with single-input-single-output. Recently, a second-order structure preserving Krylov technique was presented in [1]. We will show that the technique may suffer from numerical instability under some conditions. We propose a new strategy to avoid the instability issue. Furthermore, we discuss a pole assignment problem arising from stabilizing reduced order models.