Active Modal Control of Non-Proportionally Damped Systems with Divergent Modes

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基本資料

Project title

Code/計畫編號

NSC89-2212-E019-001

Translated Name/計畫中文名

具發散模態之非比例式阻尼系統的主動模態控制

Project Coordinator/計畫主持人

Yih-Hwang Lin

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Mechanical and Mechatronic Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=501303

Year

2000

Start date/計畫起

01-08-1999

Expected Completion/計畫迄

01-07-2000

Bugetid/研究經費

449千元

ResearchField/研究領域

機械工程

本研究之目的為探討輸送超過臨界流速之流體所引發承載樑結構之發散 (divergence)，使用主動回饋控制方法以確保系統之穩定性及抑制結構振動。因超過臨界流速之輸送流體而引起之結構發散，將使用主動控制技巧，推導出系統之動態特性，並以最佳獨立模態控制法 (Independent Modal Space Control, IMSC)來進行設計。本研究對於不穩定之發散模態提出最佳獨立模態控制之設計方法與穩定性分析，對其一控制模態力使用無限權重設計，保證控制系統之穩定性。The purpose of this research is to study the divergence characteristics of pipes conveying fluid and to explore the applicability of active vibration control for ensuring system stability and for suppressing the associated excessive structural vibration. Active vibration control technique is developed in this work for pipes conveying fluid with a flow speed exceeding the critical one. Optimal independent modal space control (IMSC) is applied for the design. A weighting matrix with an infinite weight is used for controlling the real modes, the divergent modes. From this study, it is demonstrated that the control approach proposed in this work can ensure closed loop stability.

Keyword(s)

振動控制
控制出溢
獨立模態控制
Vibration control
Control spillover
Independent modal space control (IMSC)

DSpace CRIS

Active Modal Control of Non-Proportionally Damped Systems with Divergent Modes

基本資料

Description