WIT Press

Time Delay Limits In Active Control Systems With Closed-loop Linear Algorithm

Price

Free (open access)

Paper DOI

10.2495/ERES990661

Volume

41

Pages

10

Published

1999

Size

811 kb

Author(s)

A. Baratta & O. Corbi

Abstract

The purpose of the paper is to investigate the problem of delayed active control, with reference to a s d.o.f. system controlled by a closed-loop linear algorithm and under the action of a dynamic forcing function. The exceeding of specified limits of the time gap elapsing between the sensors' reading of the excitation and / or of the response variables and the starting of the control actuation devices can, actually, vanify the control system effectiveness with reference to structural response attenuation or, even, lead quickly to system instability. Besides, this circumstance can also be met for particular values of the occurred time delay, deeply linked to the structure mechanical characteristics and

Keywords