Ultra-broadband natural frequency using automatic resonance tuning of energy harvester and deep learning algorithms

Kouritem, Sallam A.; Altabey, Wael A.

doi:10.1016/j.enconman.2022.116332

Cited by 15 publications

(11 citation statements)

References 56 publications

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“…The numerical results of voltage frequency response are in good agreement with experimental results introduced by reference (Kouritem and Altabey 2022). The maximum voltage calculated using FEM was 102.82 V, while the recorded experimentally by reference (Kouritem and Altabey 2022) was 100 V with a 2.82% difference. Moreover, Fig.…”

Section: Finite Element Model Validationmentioning

confidence: 72%

“…The experimental study of Erturk and Inman (Kouritem and Altabey 2022) was repeated numerically using our COM-SOL model and the results were compared. The piezoelectric and subtract layers' dimensions and properties were the same as those given by reference (Kouritem and Altabey 2022) as shown in Table 7. From Table 8, it is obvious that the harvester, in both studies, is very wide (width = 0.6260 of length), which generates a broader natural frequency than a slender one.…”

Section: Finite Element Model Validationmentioning

confidence: 99%

“…Mohamed et al (Mohamed et al 2021) utilized the COMSOL optimization module (BOBYQA solver) and the genetic algorithm to optimize the shape of the energy-harvesting piezoelectric cantilever to maximize the output power. Kouritem et al (Kouritem et al 2022) introduced a broadband technique using the tuning of passive masses on an array of the piezoelectric energy harvester. The introduced solution can manage the lowering of the power between the peaks.…”

Section: Introductionmentioning

confidence: 99%

“…Bani-Hani et al (Bani-Hani et al 2022) designed a sensor of 17 harvesters to sense the vibrations resulting from an Earthquake excited in the frequency range (1-17 Hz). Kouritem et al (Kouritem et al 2022b;Kouritem and Altabey 2022;Altabey and Kouritem 2022) utilized the Automatic Resonance Technique for a cantilever of piezoelectric to produce wideband natural frequency. Erturk and Inman (Erturk and Inman 2009) investigated experimentally and analytically a bimorph with different connections (series and parallel).…”

Section: Introductionmentioning

confidence: 99%

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Effect of major factors on broadband natural frequency energy harvesting for rectangular and L- shaped cantilever harvesters

2023

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A small amount of natural frequency deviation extremely decreases the output power. So, a multi-mass single harvester (bending harvester) was utilized to enlarge the bandwidth of the natural frequency. We constructed three models to study the effect of increasing the concentrated masses on increasing the bandwidth natural frequency. We used Finite Element Metho (FEM (COMSOL to model and simulate the three models. Moreover, we constructed an L-shaped harvester with concentrated masses to compare the rectangular harvester with concentrated masses. The results prove that increasing the number of concentrated masses increases the output power and broadband natural frequency. Moreover, the results indicate that the harvester cantilever with concentrated masses gives more output power and broadband than the L- shaped harvester for the same volume. Also, our research studied the harvester parameter effects on the output power. This study found that the increase in beam length and mass height increases the output power while the increase in piezoelectric thickness and damping ratio decreases the output power and bandwidth frequency. We validated our proposed model through a comparison with others’ preceding experimental results and it showed a good agreement. The harvester with a high width/length ratio gives a larger wideband natural frequency.

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Section: Finite Element Model Validationmentioning

confidence: 72%

Section: Finite Element Model Validationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of major factors on broadband natural frequency energy harvesting for rectangular and L- shaped cantilever harvesters

2023

Self Cite

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“…Piezoelectric ceramic materials are currently the most commonly used smart materials [ 3 , 4 , 5 ] in the field of aerospace engineering. The piezoelectric transducers are used in active vibration and noise suppression sensors for plate structures [ 6 ], vibration energy collection sensors [ 7 ], high-precision digital torque wrenches [ 8 ], mechanical strain measurement sensors [ 9 ], structural health monitoring (SHM) [ 10 , 11 ], and flaw detectors [ 12 , 13 ] et al Piezoelectric is suitable for small sensors and high output power [ 14 ]. However, sometimes, some performance flaws of piezoelectric ceramic materials, such as a small size range, low frequency that is difficult to achieve [ 15 ], high voltage intolerance, high driving voltage [ 16 ], and material fading polarization [ 17 ], limit its application in the sensing system to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of High-Power and Low-Frequency Broadband Transducer with Giant Magnetostrictive Material

Yang

Wang

Zhao

et al. 2022

Sensors

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The applications of sensors in the aerospace industry are mostly concentrated in the middle and high frequencies, and low-frequency sensors often face the problems of low power and short working bandwidth. A lightweight, thin, high-power, low-frequency broadband transducer based on giant magnetostrictive material is designed. The design and optimization processes of the core components are introduced and analyzed emphatically. The finite element simulation results are validated by the PSV-100 laser vibration meter. Three basic configurations of the work panel are proposed, and the optimal configuration is determined by modal, acoustic, and vibration coupling analyses. Compared with the original configuration, it is found that the lowest resonant frequency of the optimal configuration is reduced by 24.6% and the highest resonant frequency within 2000 Hz is 1744.9 Hz, which is 54.2% higher than that of the original configuration. This greatly improves the vibration power and operating frequency range of the transducer. Then, the honeycomb structure is innovatively applied to the work panel, and it is verified that the honeycomb structure has a great effect on the vibration performance of the work panel. By optimizing the size of the honeycomb structure, it is determined that the honeycomb structure can improve the vibration power of the work panel to its maximum value when the distance between the half-opposite sides of the hexagon is H = 3.5 mm. It can reduce the resonant frequency of the work panel; the lowest resonant frequency is reduced by 12.8%. At the same time, the application of a honeycomb panel structure can reduce the weight of the transducer.

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Unlocking the Rhythmic Power of Bacterial Cellulose: A Comprehensive Review on Green Energy Harvesting and Sustainable Applications

Mikaeeli Kangarshahi,

Naghib,

Younesian

et al. 2024

Adv Funct Materials

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Bacterial cellulose is a biodegradable and ecologically safe material that has the potential to convert mechanical vibrations into electrical energy. This review introduces green energy harvesting, a novel concept that harnesses natural processes to provide sustainable energy. A thorough overview of bacterial cellulose, covering its distinctive features, its biological origin, and its energy conversion process, is fully presented. The different materials and methods used to design and fabricate bacterial cellulose‐based energy harvesters are explored. Moreover, the various applications and benefits of these devices in the context of renewable energy are examined. The current challenges and limitations of this emerging field are identified and the possible avenues for future research are suggested. The significance of adopting eco‐friendly approaches in achieving a balance between human needs and environmental preservation is highlighted. By providing a comprehensive and critical assessment of bacterial cellulose as a green energy harvester, this review aims to motivate researchers, engineers, and policymakers to tap into the rhythmic potential of this natural material in building a more sustainable and resilient future.

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Ultra-broadband natural frequency using automatic resonance tuning of energy harvester and deep learning algorithms

Cited by 15 publications

References 56 publications

Effect of major factors on broadband natural frequency energy harvesting for rectangular and L- shaped cantilever harvesters

Effect of major factors on broadband natural frequency energy harvesting for rectangular and L- shaped cantilever harvesters

Design and Optimization of High-Power and Low-Frequency Broadband Transducer with Giant Magnetostrictive Material

Unlocking the Rhythmic Power of Bacterial Cellulose: A Comprehensive Review on Green Energy Harvesting and Sustainable Applications

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