Frequecy-weighted model reduction via interpolation
-
- Amano Ryo
- Kinki Univ.
-
- Horiguchi Kazumi
- Kinki Univ.
-
- Nishimura Takuya
- Kinki Univ.
-
- Nagata Akira
- Kinki Univ.
Bibliographic Information
- Other Title
-
- 補間による周波数重み付きモデル低次元化
- ホカン ニヨル シュウハスウ オモミツキ モデル テイジゲンカ
Search this article
Abstract
We propose a numerical method of the frequency-weighted model reduction. A model to be reduced (an original model) is a stable SISO discrete-time model which is described by high-order state space equations. We design the reduced-order model so that it can interpolate 1st-and 2nd-order information of the original model at complex frequency points (interpolation points) in the unit circle. The characteristics of the reduced-order model greatly depend on the choice of the interpolation points. The proposed model reduction method is a numerical one which chooses the interpolation points by searching in the unit circle to find the reduced-order model such that L∞-norm of the reduction error is less than a prescribed value. This method has the following features, which shows that it is an effective numerical method of the frequency-weighted model reduction. i) The reduced-order model is guaranteed to be stable. ii) The procedure of finding the reduced-order model is simple and requires relatively a small amount of computation. iii) The order of the reduced-order model can be controlled by choosing the number ssssssof the interpolation points.
Journal
-
- IEEJ Transactions on Electronics, Information and Systems
-
IEEJ Transactions on Electronics, Information and Systems 117 (10), 1472-1478, 1997
The Institute of Electrical Engineers of Japan
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282679584368128
-
- NII Article ID
- 130006843579
- 10002811890
-
- NII Book ID
- AN10065950
-
- ISSN
- 13488155
- 03854221
-
- NDL BIB ID
- 4303598
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed