This Article Full Text (PDF) All Versions of this Article: 1045389X07081095v1 1045389X07081095v2 19/7/805    most recent References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Vasques, C.M.A. Articles by Rodriques, J. D. Search for Related Content Social Bookmarking                         What's this?

Numerical and Experimental Comparison of the Adaptive Feedforward Control of Vibration of a Beam with Hybrid Active-Passive Damping Treatments

Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Mecânica e Gestão Industrial, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal, cvasques{at}fe.up.pt

J. Dias Rodriques

Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Mecânica e Gestão Industrial, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal, jdr{at}fe.up.pt

This article concerns the adaptive feedforward control of vibration of a freely supported beam with two distinct surface mounted hybrid active—passive damping treatments. The first configuration concerns the use of an Active Constrained Layer Damping (ACLD) patch alone, where the piezoelectric constraining layer is actively utilized to increase the shear deformation of the sandwiched passive viscoelastic layer and at the same time to apply forces and moments into the structure, which will balance the power flows into the structure, and is denoted by ACLD configuration. The second configuration regards the use, as an active element in the control, of the piezoelectric patch alone, denoted by Active Damping (AD), and since the constraining layer of the ACLD treatment also bonded on the other side of the beam is not actively utilized, a Passive Constrained Layer Damping (PCLD) treatment is utilized in combination with an AD one, yielding an AD/PCLD configuration. A finite element model of the beam with the damping treatments is used for the simulation of the adaptive feedforward controller which is also implemented and tested in real-time. The aims are to compare the predicted and measured damping performances of the two treatments in terms of vibration reduction, control effort, stability and robustness, when a filtered-reference LMS algorithm is used to cancel the effects of a broadband voltage disturbance applied into a third surface mounted piezoelectric patch which is used to excite the beam.

Key Words: beam • viscoelastic • piezoelectric • ACLD • damping • vibration • feedforward • control.

This version was published on July 1, 2008

Journal of Intelligent Material Systems and Structures, Vol. 19, No. 7, 805-813 (2008)
DOI: 10.1177/1045389X07081095


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?