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Vibration control of piezoelectric smart beam spline wavelet decomposition

3147 weeks again, and, by the king in mind. Based on wavelet analysis of piezoelectric cantilever plate power control mode. Mechanics,[link widoczny dla zalogowanych], 1998; 30 (6) :719-7278ZhouYouHe, WangJizeng, ZhengXiaoJing, eta1. Vi-brationcontrolofvariablethicknessplateswithpiezo-electricsensorandactuatorbasedonwavelettheory. JournalofSoundandVibration,[link widoczny dla zalogowanych], 2000; 237 (3) :395-4109 ZHOU and, Zheng X. Temperature environment,[link widoczny dla zalogowanych], circular plate of piezoelectric active control of the frequency. Mechanics, 199 830 (1) :58-6410 weeks again, and, Zheng X. Structural Mechanics of electromagnetic solids. Beijing: Science Press, 199 911 Cuijin Tai [U.S.] a, Wavelets translation. Introduction to wavelet analysis. Xi'an: Xi'an Jiaotong University Press, 199512 Shen Pengcheng. Multivariable spline finite element. Beijing: Science Press, 19978642O2468OOOOOOOO284 Vibration Engineering Volume 15 SplineWaveletDecompositionMethodforVibrationControlofPiez0electricSmartBearnsWangdieZhouYouhP (DepartmentofMechanics, LanzhouUniversityLanzhou, 730000) AbstractBasedontheLagrange'sdynamicequations, anewmethodforactivevibrationcontrolofpiezoelectricsmartbeamsisdevelopedusingsplinewaveletdecompositioninthispaper. Firstly, thedeflectionofthebeamisdecomposedintocompo-nentsindifferentfrequencybandswithsplinewaveletdecomposition. Neglectinghighorderfrequencycomponentsthediffer-entialequationsoftheclosed - loopsystemarederived. Then, theobserveddeflectionofthebeamistransformedthroughscalingfunction. DuetOthescalingfunctionisalowpasswindowfunction,[link widoczny dla zalogowanych], afterscalingfunctiontransformationthedeflec-tiondoesn'tincludehighorderfrequencycomponents. Itcaneliminateobservationspillover, whichusuallymakestheclosed-loopsystemunstable. Finally, anumericalsimulationexampleshowsthatthemethodsuggestedinthispaperiseffectiveandsimplerthanconventionalmethod. Keywords: smartstructures; vibrationcontrol; splinefunction; waveletdecompositioniobservationspillover the first of the men and Wang Jie,[link widoczny dla zalogowanych], MA, April 1975, 1O students. Tel: (0931) 8912447; E-mail: wjs2000 @ sina. com

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