Multimodal vibration damping using energy transfer

The semi-active synchronized switch damping (SSD) approach has been widely used in vibration suppression owing to its many advantages compared with the active and passive approaches. The SSD method is realized by switching the voltage on the piezoelectric patch embedded in the structure, synchronically with the vibration of the mode to be controlled. Although good control performance can be obtained in the targeted mode, vibrations of highorder harmonic frequencies are usually excited due to the rectangular waveform of the switched actuator voltage because of infinitesimal inversion time, as observed in the previous experiments. This drawback of the SSD method has greatly hindered its application in practical engineering structures. In order to overcome this drawback, the authors propose a new method in this study to suppress the high-order harmonic components in the switched voltage by increasing the inversion time of the voltage. The theoretical expressions of the switched voltage and the dynamic response of the structure were formulated for the cases with finite voltage inversion time. The theoretical results show that increasing the inversion time may weaken the vibration control effect of the targeted mode, but it can significantly reduce the excitation force of the highorder harmonic components. When the inversion time is half of the period of the targeted mode, all the high-order harmonic components in the actuator voltage are completely erased and the control force of the targeted mode decreases by 21%. An experimental setup of a flexible beam was used to verify the theoretical results of the switched voltage and control performance under different inversion time.

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“…According to the displacement of the first mode in equation (7), the phase delay can be expressed as…”

Section: General Electromechanical Model Of a Vibration Systemmentioning

confidence: 99%

“…The SSD method shows its great potential in vibration control because of several advantages. Recently, a number of investigations have been carried out with the aim of improving the control performance using the SSD method [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Superharmonic vibration and its reduction in SSD control by increase of voltage inversion time

Tan

Qiu

et al. 2018

Smart Mater. Struct.

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“…The SSDI method is not sensitive to changes in excitation frequency, and the inductance in SSDI is usually less than that in RL resonant shunting [10,11]. Furthermore, several switch control algorithms [12][13][14] and several self-powered SSD methods [15][16][17] were proposed to im-prove the energy conversion efficiency of each vibration cycle and obtain better vibration damping over a wider frequency range.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Vibration Suppression of Double-Beam System via Nonlinear Switching Piezoelectric Network

2021

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In this paper, a method to suppress the vibration of a double-beam system with nonlinear synchronized switch damping on the inductor via a network (SSDI-net) is proposed. Unlike the classical linear piezoelectric shunt damping, SSDI-net is a nonlinear piezoelectric damping. A double-beam system with SSDI-net was simplified to a lumped parameter electromechanical coupling model and analyzed by using the multi-harmonic balance method, at first with alternating frequency–time techniques (MHBM/AFT). Then, a new lower-power autonomous switching control circuit board was designed, based on SSD technique, and vibration control experiments using a double-beam system with an SSDI network are conducted, to verify the validity of the proposed analysis method and its calculation results. The nonlinear switching piezoelectric network proposed in this article can increase the voltage inversion factor. Furthermore, future applications of this switching piezoelectric network technology in the vibration suppression of bladed-disk structures in aero engines can reduce the number of switches by at least half and obtain almost the same damping effect.

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Synchronized Switch Damping with Diode (SSDD) Based on a Network of Piezoelectric Elements for Improved Vibration Damping of Smart Structure

Gao

Richard

et al. 2019

Proceedings of the International Petroleum and Petrochemical Technology Conference 2019

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Multimodal vibration damping using energy transfer

Cited by 3 publications

References 10 publications

Superharmonic vibration and its reduction in SSD control by increase of voltage inversion time

Superharmonic vibration and its reduction in SSD control by increase of voltage inversion time

Analysis of the Vibration Suppression of Double-Beam System via Nonlinear Switching Piezoelectric Network

Synchronized Switch Damping with Diode (SSDD) Based on a Network of Piezoelectric Elements for Improved Vibration Damping of Smart Structure

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