Quasi-optimal locations of piezo-elements on a rectangular plate

Koszewnik, Andrzej; Gosiewski, Zdzisław

doi:10.1140/epjp/i2016-16232-2

Cited by 12 publications

(14 citation statements)

References 15 publications

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“…In the next step, the strains of the tube and its vertical deflections are numerically analysed. In this way, the quasi optimal location of the piezo-harvester element on the structure to obtain the maximum voltage from vibrations was assessed, similarly as it was done in reference [15]. For this purpose, firstly the excitation force that represents a thrust force needs to be defined.…”

Section: Parametermentioning

confidence: 99%

Performance assessment of an energy harvesting system located on a copter

Koszewnik

Ołdziej

2019

Eur. Phys. J. Spec. Top.

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Energy harvesting from moving structures for autonomous electrically powered applications, i.e. unmanned aerial vehicles (UAVs), especially in the case quadrotors, has been a common subject of scientific investigations in last years. Most of them have looked into improving the endurance of electrically powered UAVs using technologies such as photovoltaic or vibration harvesting. UAV platforms have a limited amount of power for electrical suppling. In order to keep a constant time of flight duration, the UAV can be equipped with an additional battery, which increases the total mass and causes higher energy losses. Therefore, we address this problem in our paper by proposing a vibration-based energy harvesting system. It consists of piezoelectric harvesters integrated into a frame of BLDC rotors. In order to check efficiency of the energy harvesting system, the copter is equipped with MFC harvesters. Taking into account this solution, the distributedparameters of the electromechanical system in the modal coordinates are estimated using numerical methods. The simulation results showedhow the duty cycle of the PWM signal applied to the BLDC rotor and resistive load connected to the system influence on voltage generating by the piezo harvester, while experimental test allow verify them.

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Section: Parametermentioning

confidence: 99%

Performance assessment of an energy harvesting system located on a copter

Koszewnik

Ołdziej

2019

Eur. Phys. J. Spec. Top.

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“…The parameters of this structure and piezo-patches used in the system are collected in table 1. The whole process of determining the orientation and locations of these piezo-elements for this structure is described in detail in [26]. Such an approach to the modelling of this type of mechanical structures allows considering two independent control systems for separately controlling the chosen modes (even or odd) in the frequency range of 10-250 Hz.…”

Section: Mathematical Modelling Of the Smart Platementioning

confidence: 99%

“…Next, taking into account the auto-regressive model and the reduction order process described in detail in the reference [26], the reduced order models of particular sub-systems are obtained and expressed in the following forms, respectively: As a result, models estimated in this way for residue analysis are transformed to the partial-fraction form. Then, each model from eqs.…”

Section: Identification Procedures Of the Plate Parametersmentioning

confidence: 99%

“…The control plant in this case is the SFSF plate with non-collocated two-pair piezo-elements (sensor, actuator). The numerical investigations carried out for this structure and described in paper [26] showed that the choice of proper locations and orientations of piezo-elements for this type of structure is a crucial stage in the design procedure of a vibration control system. It is especially important when designing a control system for rectangular 2D smart structures in which the applied piezo-stripes generate extensions only in longitudinal directions.…”

Section: Introductionmentioning

confidence: 99%

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The design of a vibration control system for an aluminum plate with piezo-stripes based on residues analysis of model

Koszewnik

2018

Eur. Phys. J. Plus

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The design process of an active vibration control system for many mechanical structures using smart devices requires determining reduced and precise mathematical models. Such requirements cause orthogonal methods to be used and carefully analyzed. In the present paper, a plate with two simple supported edges and two free edges (SFSF) is an object of consideration. It is known that this structure represents a flexible structure wherein high natural frequencies are separated from low frequencies because they are naturally damped. Thus, in order to estimate the dynamical features of the control system, some orthogonal methods, such as the Schur and modal decomposition, were applied. A detailed analysis of the chosen methods showed us that each of them properly generates resonance frequencies while calculating different values of the anti-resonance frequencies. From the strategy control point of view, it is known that the anti-resonances play an essential role because they directly influence the dynamics of the whole control system. Thus, in order to check this behavior, different controllers are designed for various reduced models and, next, they are applied in a real mechanical structure. The dynamical behavior of the control systems with such controllers was analyzed and tested on a laboratory stand. In conclusion, we should carefully choose model reduction methods in the design process of the vibration control system. The sum of the residues of the reduced model appeared to be the best indicator during the choice process of the reduction method. It is particularly important when we design the vibration control system for a non-existent yet, but newly designed, structure.

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“…The first one will be used to excite the plate (exciting piezo) and the second one as an actuator for the control strategies tested in the experimental activity (controller piezo). About the problem of the good location of the piezo-actuator and piezo-sensor on a rectangular plate, which is a relevant point for an active vibration damping system, especially for a few first mode shapes of the plate [23], the position of piezo B was chosen, considering the results of numerical/experimental tests, performed in [24]. Piezo B working as actuator piezo in the SSSA control approach, was collocated in the region where the maximum deformation for the first modes of the structure is expected.…”

Section: Test Articlementioning

confidence: 99%

Implementation of an Electronic Circuit for SSSA Control Approach of a Plate Type Element and Experimental Match with a Feed-Forward Approach

Viscardi¹,

Leo²

2016

Archive of Mechanical Engineering

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Successful implementation of an active vibration control system is strictly correlated to the exact knowledge of the dynamic behavior of the system, of the excitation level and spectra and of the sensor and actuator's specification. Only the correct management of these aspects may guarantee the correct choice of the control strategy and the relative performance. Within this paper, some preliminary activities aimed at the creation of a structurally simple, cheap and easily replaceable active control systems for metal panels are discussed. The final future aim is to control and to reduce noise, produced by vibrations of metal panels of the body of a car. The paper is focused on two points. The first one is the realization of an electronic circuit for Synchronized Shunted Switch Architecture (SSSA) with the right dimensioning of the components to control the proposed test article, represented by a rectangular aluminum plate. The second one is a preliminary experimental study on the test article, in controlled laboratory conditions, to compare performances of two possible control approach: SSSA and a feed-forward control approach. This comparison would contribute to the future choice of the most suitable control architecture for the specific attenuation of structure-born noise related to an automotive floor structure under deterministic (engine and road-tyre interaction) and stochastic (road-tyre interaction and aerodynamic) forcing actions.

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Quasi-optimal locations of piezo-elements on a rectangular plate

Cited by 12 publications

References 15 publications

Performance assessment of an energy harvesting system located on a copter

Performance assessment of an energy harvesting system located on a copter

The design of a vibration control system for an aluminum plate with piezo-stripes based on residues analysis of model

Implementation of an Electronic Circuit for SSSA Control Approach of a Plate Type Element and Experimental Match with a Feed-Forward Approach

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