✦ LIBER ✦

RESONANCES OF A NON-LINEAR s.d.o.f. SYSTEM WITH TWO TIME-DELAYS IN LINEAR FEEDBACK CONTROL

✍ Scribed by J.C. JI; A.Y.T. LEUNG

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 207 KB
Volume: 253
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.2001.3974

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✦ Synopsis

The primary, superharmonic, and subharmonic resonances of a harmonically excited non-linear s.d.o.f. system with two distinct time-delays in the linear state feeback are studied. The two di!erent time-delays are presented in the proportional feedback and the derivative feedback respectively. The method of multiple scales is utilized to obtain the "rst order approximation of response. The e!ect of the feedback gains and time-delays on the steady state responses of three types of resonances is investigated. It is found that a proper selection of the feedback gains and time-delays can enhance the control performance.

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