Robust control of the delayed resonator vibration absorber

Author

Renzulli, Mark E. ; Ghosh-Roy, Rajiv ; Olgac, Nejat

Author_Institution

United Technol. Res. Center, East Hartford, CT, USA

Volume

7

Issue

6

fYear

1999

fDate

11/1/1999 12:00:00 AM

Firstpage

683

Lastpage

691

Abstract

A recent active vibration absorption scheme, the delayed resonator (DR), is considered. This method uses a very simple delayed partial state feedback control law. This simple but unconventional control invites some challenging practical problems, among which is the highlight of this paper: automatic tuning of the absorber despite parametric uncertainties in the absorber model. A frequency domain technique to achieve this objective is presented. It is based on gradient analysis of a frequency transfer function. It is shown that the routine can be implemented in real-time due to its simplicity and recurrent nature. The theoretical findings are also experimentally verified on an oscillating beam. Excellent vibration suppression is obtained not only under excitations with fixed frequency but also for those of sweep frequency type

Keywords

control system synthesis; delays; frequency-domain synthesis; gradient methods; robust control; state feedback; transfer functions; uncertain systems; vibration control; active vibration absorption scheme; automatic absorber tuning; delayed partial state feedback control law; delayed resonator vibration absorber; fixed frequency excitations; frequency domain technique; frequency transfer function; gradient analysis; oscillating beam; parametric uncertainties; recurrent routine; robust control; sweep frequency excitations; vibration suppression; Absorption; Automatic control; Delay; Frequency domain analysis; Robust control; State feedback; Transfer functions; Tuning; Uncertainty; Vibration control;

fLanguage

English

Journal_Title

Control Systems Technology, IEEE Transactions on

Publisher

ieee

ISSN

1063-6536

Type

jour

DOI

10.1109/87.799669

Filename

799669