New approach of frequency tuning for kinetic energy harvesters

Schaufuss, Joerg; Scheibner, Dirk; Mehner, Jan

doi:10.1016/j.sna.2011.07.022

Cited by 17 publications

(16 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Variable Center of Gravity Based [43][44][45][46][47][48][49] They exploit the fact that in a cantilever with a tip mass it is possible to change the resonance frequency of the structure by varying the position of the center of gravity.…”

Section: Clamp Position Changementioning

confidence: 99%

“…Variable center of gravity based MTTs exploit the fact that in a cantilever structure with a tip mass it is possible to change the resonance frequency of the structure by varying the position of the center of gravity [43][44][45][46][47][48][49]. In particular, by moving the center of gravity, it is possible to vary the values of both the effective inertial mass and the effective stiffness and hence the value of the resonance frequency.…”

Section: Variable Center Of Gravity Based Mttsmentioning

confidence: 99%

“…Instead, the farther the center of gravity from the tip of the cantilever, the lower the effective mass, the greater the effective stiffness and hence the greater the resonance frequency. In the following, the main variable center of gravity based MTTs are discussed [43][44][45][46]. Additional variable center of gravity based MTTs [48,49] are reported in the Reference Section without a specific description since their working principles are very similar to the ones described in this section.…”

Section: Variable Center Of Gravity Based Mttsmentioning

confidence: 99%

See 2 more Smart Citations

Tuning Techniques for Piezoelectric and Electromagnetic Vibration Energy Harvesters

Costanzo

Vitelli

2020

Energies

View full text Add to dashboard Cite

This paper is focused on resonant vibration energy harvesters (RVEHs). In applications involving RVEHs the maximization of the extraction of power is of fundamental importance and a very crucial aspect of such a task is represented by the optimization of the mechanical resonance frequency. Mechanical tuning techniques (MTTs) are those techniques allowing the regulation of the value of RVEHs mechanical resonance frequency in order to make it coincident with the vibration frequency. A very great number of MTTs has been proposed in the literature and this paper is aimed at reviewing, classifying and comparing the main of them. In particular, some important classification criteria and indicators are defined and are used to put in evidence the differences existing among the various MTTs and to allow the reader an easy comparison of their performance. Finally, the open issues concerning MTTs for RVEHs are identified and discussed.

show abstract

Section: Clamp Position Changementioning

confidence: 99%

Section: Variable Center Of Gravity Based Mttsmentioning

confidence: 99%

Section: Variable Center Of Gravity Based Mttsmentioning

confidence: 99%

See 1 more Smart Citation

Tuning Techniques for Piezoelectric and Electromagnetic Vibration Energy Harvesters

Costanzo

Vitelli

2020

Energies

View full text Add to dashboard Cite

show abstract

“…The sensitivity of this method for frequency tuning was 1.67 Hz/mm. Schaufuss et al 38 developed vibration energy harvesters with a lever mechanism to adjust the position of the center of the gravity (see Fig. 8).…”

Section: Moving Center Of Gravity Of the Harvestermentioning

confidence: 99%

A review on frequency tuning methods for piezoelectric energy harvesting systems

Ibrahim

Ali

2012

Journal of Renewable and Sustainable Energy

View full text Add to dashboard Cite

Design and testing of piezoelectric energy harvester for powering wireless sensors of electric line monitoring system J. Appl. Phys. 111, 07E510 (2012); 10.1063/1.3677771 Broadband energy-harvesting using a two degree-of-freedom vibrating body Appl. Phys. Lett. 98, 214102 (2011); 10.1063/1.3595278 Piezoelectric energy harvesting using shear mode 0.71 Pb ( Mg 1 / 3 Nb 2 / 3 ) O 3 -0.29 PbTiO 3 single crystal cantilever Appl. Phys. Lett. 96, 083502 (2010); 10.1063/1.3327330Study on structure optimization of a piezoelectric cantilever with a proof mass for vibration-powered energy harvesting systemPiezoelectric energy harvesting technologies have received a great attention during the last decade to design self-powered microelectronic devices such as wireless sensor nodes. Piezoelectric energy harvester is a resonant system that produces maximum power output when its resonant frequency matches the ambient vibration frequency. The deviation from the resonance causes significant decrease in the power output. There are two possible solutions to compensate the effect of frequency deviation: widening the operating frequency bandwidth and tuning the resonant frequency. Tuning the resonant frequency is a more efficient technique for applications with single time varying dominant frequency. This paper presents a comprehensive review of frequency tuning methods for piezoelectric energy harvesting systems. Two categories generally investigated in the literature include manual and autonomous tuning methods. The recent developments of many tuning strategies are discussed and summarized. V C 2012 American Institute of Physics.

show abstract

“…In order to harvest multiple oscillating frequencies, Liu et al [11] have fabricated an array of piezoelectric cantilevers with different lengths to respond more resonating frequencies. Schaufuss et al [12] reported an approach by adjusting the position of the auxiliary mass to tune the external vibrating frequency. Liu et al [13] proposed a double-mode energy harvester by placing an oscillator at the tip of the cantilever beam.…”

Section: Introductionmentioning

confidence: 99%

Double-wall piezoelectric cylindrical energy harvester

Mei

2015

Sensors and Actuators A: Physical

View full text Add to dashboard Cite

a b s t r a c tCylindrical structures possess the advantage of responding multi-directional vibrations compared with cantilevers. In this paper a double-wall cylindrical energy harvesting device is proposed to scavenge multimode mechanical vibrations. Compared with the single-wall energy harvester, it is found from the finite element analysis that the double-wall device generates higher output voltage, and responds to a wider oscillating frequency range. These advantages have been validated by experiments, where the open circuit output voltage for eight resonating modes has been characterized. For further investigation, dynamic responses of the device at these eight resonating modes have been characterized under various excitations. It is seen from the experiment that as the driven voltage of the excitation source increases from 5 V to 16 V, the output voltage increases and the corresponding quality factors reduces.

show abstract

New approach of frequency tuning for kinetic energy harvesters

Cited by 17 publications

References 9 publications

Tuning Techniques for Piezoelectric and Electromagnetic Vibration Energy Harvesters

Tuning Techniques for Piezoelectric and Electromagnetic Vibration Energy Harvesters

A review on frequency tuning methods for piezoelectric energy harvesting systems

Double-wall piezoelectric cylindrical energy harvester

Contact Info

Product

Resources

About