Adaptive feedforward control of vibration of a beam with active-passive damping treatments: Numerical analysis and experimental implementation

• Type: Article in International Conference Proceedings Book
• Date: 2006

Authors

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

Conference proceedings International

Title: SIXTEENTH INTERNATIONAL CONFERENCE ON ADAPTIVE STRUCTURES AND TECHNOLOGIES

Pages: 255-262

16th International Conference on Adaptive Structures and Technologies

Paris, FRANCE, OCT 09-12, 2005

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ISI Web of Knowledge - 0 Citations

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Other information

Authenticus ID: P-004-QRX

Abstract (EN): This paper concerns the adaptive feedforward control of vibration of a freely supported beam with active-passive damping treatments using the filtered-reference LMS algorithm. Two distinct damping treatments are bonded on the beam and the aim is to compare the damping performances of the control configurations when the beam is excited by a broadband voltage disturbance applied into another piezoelectric patch. 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 passive viscoelastic layer and at the same time to transmit efforts to 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 beam is not actively utilized, a Passive Constrained Layer Damping (PCLD) treatment is utilized in combination with AD, yielding an AD/PCLD configuration. A finite element (FE) model is used for the simulation of the adaptive feedforward controller which is also implemented in real-time.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8