Techno Press


Smart Structures and Systems   Volume 5, Number 1, January 2009, pages 55-68
DOI: http://dx.doi.org/10.12989/sss.2009.5.1.055
 
Simulation and experimental analysis of active vibration control of smart beams under harmonic excitation
L. Malgaca and H. Karagulle

 
Abstract     [Full Text]
    In the present study, active control of a smart beam under forced vibration is analyzed. The aluminum smart beam is composed of two piezoelectric patches and strain gauge. One of the piezoelectric patches is used as controlling actuator while the other piezoelectric patch is used as vibration generating shaker. The smart beam is harmonically excited by the piezoelectric shaker at its fundamental frequency. The strain gauge is utilized to sense the vibration level. Active vibration reduction under harmonic excitation is achieved using both strain and displacement feedback control. Control actions, the finite element (FE) modeling and analyses are directly carried out by using ANSYS parametric design language (APDL). Experimental applications are performed with LabVIEW. Dynamic behavior at the tip of the beam is evaluated for the uncontrolled and controlled responses. The simulation and experimental results are compared. Good agreement is observed between simulation and experimental results under harmonic excitation.
 
Key Words
    active control of forced vibration; piezoelectric; finite element analysis.
 
Address
L. Malgaca and H. Karagulle; Department of Mechanical Engineering, Dokuz Eylul University, 35100, Bornova / Izmir, Turkey
 

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