scholarly journals The verification of a piezoelectric vibration-suppression system with a multimode basic RLC shunt circuit and its comparison to a multi-mode current-flowing shunt circuit

2020 ◽  
pp. 1-9
Author(s):  
Łukasz Ścisło
Keyword(s):  
Vibration Suppression ◽  
Piezoelectric Materials ◽  
Electrical Circuit ◽  
Active System ◽  
Modern Methods ◽  
Multi Mode ◽  
Suppression System ◽  
Vibration Forms ◽  
Piezoelectric Vibration ◽  
Shunt Circuit

One of the modern methods of reducing vibrations of plates and beams is using piezoelectric materials in the form of distributed elements or patches (applied in a passive or an active system). However, for the multimodal response of a structure, there is no possibility to place the actuators in exactly the areas with maximum curvature values for each mode. Additionally, in the case of passive multimodal suppression systems – in which energy is needed to be supplied to the system – there is the necessity to create a complicated electrical circuit. The particular electrical shunts of the circuit are tuned to the specifi c vibration forms which require damping. The main objective of this article is to show the possibility of creating a multimodal vibration suppression system with typical resonant shunts and proposed second slightly modifi ed.

Virtual Piezoelectric Vibration Absorber with LR Parallel Shunt Circuit

2012 ◽  
Vol 479-481 ◽  
pp. 1165-1168
Author(s):  
Ning Li
Keyword(s):  
Environmental Changes ◽  
Vibration Suppression ◽  
Vibration Absorber ◽  
Feedback Structure ◽  
Circuit Component ◽  
Shunt Damping ◽  
Numerical Representations ◽  
Piezoelectric Shunt ◽  
Piezoelectric Vibration ◽  
Shunt Circuit

A virtual piezoelectric vibration absorber with LR Parallel shunt circuit was developed to emulate the effect of a physical piezoelectric shunt damper. A controller was designed and the feedback structure according to the LR parallel shunt circuit was suggested by using the governing equations of piezoelectric shunt damping system. The inductor L and resistor R only “exist” as numerical representations inside the controller. The virtual piezoelectric vibration absorber can both eliminate the need for large inductor and tune circuit component parameters online to adapt to environmental changes. Therefore the two disadvantages of the physical piezoelectric shunt damper are overcome. The simulation results for a cantilever beam show the effectiveness of the Virtual piezoelectric vibration absorber for vibration suppression.

scholarly journals Electromechanical Modeling and Simulation of Piezoelectric Vibration based Energy Harvester Interfaced with MPPT based Electrical Circuit using Matlab Simulink

2019 ◽  
Vol 8 (2S11) ◽  
pp. 36-40
Keyword(s):  
Energy Harvester ◽  
High Efficiency ◽  
Electrical Circuit ◽  
Vibration Energy Harvester ◽  
Matlab Simulink ◽  
Electromechanical Model ◽  
Wind Vibration ◽  
Long Time ◽  
Piezoelectric Vibration ◽  
High Output

Wind vibration based energy harvester using piezoelectric material has been of great concern to researchers for a long time for low power generation and applications. In this paper, wind generated vibrations are used to develop electromechanical model of piezoelectric vibration energy harvester to generate electrical output using MATLAB simulink and comparision has been drawn between an electromechanical model of piezoelectric harvester interfaced with P&O MPPT based electrical model and without it. It has been found that overall model with MPPT provides high output with high efficiency

An Active-Passive Piezoelectric Vibration Absorber for Structural Control Under Harmonic Excitations With Time-Varying Frequency

2000 ◽  
Author(s):  
Ronald A. Morgan ◽  
K. W. Wang
Keyword(s):  
Active Control ◽  
Structural Control ◽  
High Performance ◽  
Piezoelectric Materials ◽  
Negative Resistance ◽  
Electrical Circuit ◽  
Superior Performance ◽  
Electrical Networks ◽  
Harmonic Excitations ◽  
Time Varying Frequency

Abstract It has been shown that piezoelectric materials can be used as passive electromechanical vibration absorbers when shunted by electrical networks. Semi-active piezoelectric absorbers have also been proposed for suppressing harmonic excitations with varying frequency. However, these semi-active devices have limitations that restrict their applications. The design presented here is a high performance active-passive alternative to semi-active absorbers that uses a combination of a passive electrical circuit and active control actions. The active control consists of three parts: an adaptive inductor tuning action, a negative resistance action, and a coupling enhancement action. A formulation for the optimal tuning of the piezoelectric absorber inductance on a multiple degree of freedom (MDOF) structure is derived. The effectiveness of the proposed system is demonstrated experimentally on a system under a variable frequency excitation. Extensive parameter studies are also carried out to show that the proposed design offers superior performance and efficiency compared to other state-of-the-art control methods.

Low-frequency multi-mode vibration suppression of a metastructure beam with two-stage high-static-low-dynamic stiffness oscillators

2019 ◽  
Vol 230 (12) ◽  
pp. 4341-4356 ◽  
Author(s):  
Qichen Wu ◽  
Gangting Huang ◽  
Chong Liu ◽  
Shilin Xie ◽  
Minglong Xu
Keyword(s):  
Vibration Suppression ◽  
Dynamic Stiffness ◽  
Low Frequency ◽  
Two Stage ◽  
Mode Vibration ◽  
Multi Mode

Broadband Vibration Suppression Assessment of Negative Impedance Shunts

2008 ◽  
Author(s):  
Benjamin Beck ◽  
Kenneth A. Cunefare ◽  
Massimo Ruzzene
Keyword(s):  
Active Control ◽  
Vibration Suppression ◽  
Piezoelectric Materials ◽  
Input Power ◽  
Experimental Results ◽  
Spatial Average ◽  
Negative Capacitance ◽  
Damping Properties ◽  
Control Solution ◽  
Stiffness And Damping

Piezoelectric materials allow for the manipulation of stiffness and damping properties of host structures by the application of electrical shunting networks. The use of piezoelectric patches for broadband control of vibration using a negative impedance shunt has been shown to be an effective active control solution. The wave-tuning and minimization of reactive input power shunt selection methodologies require the use a negative capacitance. This paper shows that the two theories are comparative and obtain the same shunt parameters. The results of the theoretical shunt selection and simulation are compared to experimental results of tip vibration suppression, spatial average vibration, and reactive input power minimization.

Vibration Suppression Using Electromagnetic Resonant Shunt Damper

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
Tsuyoshi Inoue ◽  
Yukio Ishida ◽  
Masaki Sumi
Keyword(s):  
Optimal Design ◽  
Experimental Analysis ◽  
Vibration Suppression ◽  
Mechanical Energy ◽  
Voice Coil Motor ◽  
Electrical Energy ◽  
Electromagnetic Actuator ◽  
Resonant Shunt ◽  
Shunt Circuit

An electromagnetic actuator has the property to convert mechanical energy to electrical energy and vice versa. In this study, an electromagnetic resonant shunt damper, consisting of a voice coil motor with an electric resonant shunt circuit, is proposed. The optimal design of the shunt circuit is obtained theoretically for this electromagnetic resonant shunt damper. Furthermore, the effects of parameter errors of the elements of the electromagnetic resonant shunt damper are also investigated. The applicability of the theoretical findings for the proposed damper is justified by the experimental analysis.

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