Combined feedback/feedforward active control of vibration of beams with ACLD treatments: Numerical simulation

• Type: Article in International Scientific Journal
• Date: 2008

Authors

C.M.A. Vasques (Author) FEUP; J. Dias Rodrigues (Author) FEUP

Journal

Title: Computers and Structures

Vol. 86 No. 3-5

Pages: 292-306

ISSN: 0045-7949

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 17 Citations

ISI Web of Science

Scopus - 20 Citations

INSPEC

COMPENDEX

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-004-1NX

DOI: 10.1016/j.compstruc.2007.01.027

Abstract (EN): This paper concerns the numerical simulation of feedback, adaptive feedforward and hybrid (combined feedback/feedforward) control systems on the active control of vibrations of beams with Active Constrained Layer Damping (ACLD) treatments. For the simulation a 1-D beam finite element (FE) model with an arbitrary number of elastic, piezoelectric and viscoelastic layers attached to both sides of the beam is utilized. The damping behavior of the viscoelastic layers is considered by a Laplace transformed Anelastic Displacement Fields (ADF) method. The analyzed case study regards the disturbance rejection of an aluminium beam with a pair of surface mounted ACLD patches. In the design and simulation of the control system a Single-Input Single-Output (SISO) configuration with the output being the velocity at one point of the beam and the input being the control voltage applied into the piezoelectric constraining layers is considered. The case study allows to assess and discuss the outcomes and drawbacks of the feedback and feedforward controllers when used individually and the advantages of the hybrid controller.

Language: English

Type (Professor's evaluation): Scientific