Independent Modal Space Vibration Control of Flexible Structures with Complex Modes

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Project title

Code/計畫編號

NSC85-2212-E019-002

Translated Name/計畫中文名

具複變模態之撓性結構的獨立模態振動控制

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=230810

Year

1996

Start date/計畫起

01-08-1995

Expected Completion/計畫迄

01-07-1996

Bugetid/研究經費

158千元

ResearchField/研究領域

機械工程

A model reference adaptive control approach, designed in the modal space, is applied for flutter control of a cantilever pipe conveying fluid. The control input is provided by a pair of surface mounted piezoelectric actuators which are driven 180 degrees out of phase to provide an equivalent bending moment acting on the controlled system. Comparison of performance of the model reference adaptive control with that of the optimal independent modal space control reveals that the former is more robust than the later in terms of flow speed variations which are unknown to the control system designed; that is the adaptive approach can tolerate a larger range of flow speed uncertainties without resulting in an unstable control system so that successful flutter suppression of the fluid-conveying cantilever pipe with high flow speed can be achieved.

Keyword(s)

獨立模態控制
複變模態
出溢現象
穩定性分析
Independent modal space control
Complex mode
Spillover
Stability analysis

DSpace CRIS

Independent Modal Space Vibration Control of Flexible Structures with Complex Modes

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