Optimum delayed feedback vibration absorber for MDOF mechanical structures

Author

Jalili, Nader ; Olgac, Nejat

Author_Institution

Dept. of Mech. Eng., Connecticut Univ., Storrs, CT, USA

Volume

4

fYear

1998

fDate

16-18 Dec 1998

Firstpage

4734

Abstract

An optimal active vibration absorber is designed for wide band excitations using a delayed partial state feedback. The final structure, named delayed feedback vibration absorber (DFVA), offers the minimum M _peak for the primary system involved within a given frequency band. A min-max problem is solved. It is shown that, the vibration suppression characteristics can be improved better than 20% over the optimum passive absorber for a typical case. Stability discussions associated with delayed systems are also presented and included in the optimization process

Keywords

control system synthesis; damping; delays; minimax techniques; optimal control; stability; state feedback; vibration isolation; DFVA; delayed partial state feedback; min-max problem; multi-DOF mechanical structures; optimal active vibration absorber; optimum delayed feedback vibration absorber; stability discussions; vibration suppression characteristics; wide band excitations; Acceleration; Delay systems; Feedback control; Frequency response; Mechanical engineering; Resonance; Stability; State feedback; Vibrations; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 1998. Proceedings of the 37th IEEE Conference on

Conference_Location

Tampa, FL

ISSN

0191-2216

Print_ISBN

0-7803-4394-8

Type

conf

DOI

10.1109/CDC.1998.762082

Filename

762082