Minimum-order system identification by subspace method and frequency-domain least-squares approximation for vibration isolation tables

Yohei Hoshino, Yukinori Kobayashi, Hiroshi Chinda, Masaki Takahashi

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

A system identification technique to obtain the minimumorder model for a vibration isolation table is studied in this paper. The vibration isolation table is supported by four pneumatic actuators at corners of the square rigid table. A 3DOF mathematical model of the vibration isolation table is constructed. The regulator for the pneumatic actuator is driven by a stepping motor. Proposed procedure is described as follows: First, the state space model is identified from input-output data by subspace method. Next, the low-order curve fitted model is calculated by Frequency-Domain Least-Squares Approximation (FDLSA). And then, the characteristic eigenvalues near the eigenvalues of FDLSA model is picked out from the N4SID model, and the minimum-order system that has the characteristic eigenvalues of N4SID model is reconstructed. And the procedure can be fully automated. Availability and usefulness of this approach is illustrated by experiments.

本文言語English
ホスト出版物のタイトルASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
ページ199-208
ページ数10
PARTS A AND B
DOI
出版ステータスPublished - 2010
外部発表はい
イベントASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010 - Vancouver, BC, Canada
継続期間: 2010 11月 122010 11月 18

出版物シリーズ

名前ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
番号PARTS A AND B
8

Other

OtherASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
国/地域Canada
CityVancouver, BC
Period10/11/1210/11/18

ASJC Scopus subject areas

  • 機械工学

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