A Frequency-Adjustable Tuning Fork Electromagnetic Energy Harvester

Wu, Qinghe; Gao, Shiqiao; Jin, Lei; Guo, Shengkai; Yin, Zuozong; Fu, He Lin

doi:10.3390/ma15062108

Cited by 8 publications

(5 citation statements)

References 31 publications

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“…Consequently, the total response containing the transient and steady-state response is obtained as Equation (11).…”

Section: Mathematical Modellingmentioning

confidence: 99%

“…Depending on the underlying energy conversion principles, energy harvesters can be classified into various types, such as electrostatic, piezoelectric, electromagnetic, magnetostrictive, and hybrid systems [9][10][11][12][13], among which piezoelectric energy harvesters more easily achieve miniaturization and integration. Piezoelectric materials commonly employed in piezoelectric energy harvesting include piezoelectric ceramics and piezoelectric polymers.…”

Section: Introductionmentioning

confidence: 99%

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Design and Machining Applications of the Piezoelectric Vibration Sensing System

Yang,

Li,

Akhmedovich

et al. 2023

JMMP

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A piezoelectric vibration sensing system (PVSS) was devised in this study and employed for the purpose of vibration sensing in machining. The system comprises three primary components, wherein the sensor is utilized for the collection and conversion of energy, subsequently transmitting it to the data acquisition card (DAC) via a low-noise cable. The crux of the entire system lies in the upper computer-based control application, which facilitates the transmission of instructions to the DAC for data acquisition and transmission. The integration of Wi-Fi data transfer capability between the DAC and the computer serves to eliminate the principal issue associated with employing the sensor as a voltage source. The sensitivity of the designed device was calibrated utilizing commercial accelerometers, while an aluminum workpiece was fabricated to conduct vibration and machining tests in order to verify the performance of the PVSS. The shaker excitation experiment yielded a peak voltage of 0.05 mV, thereby substantiating that the PVSS can more accurately discern the natural frequency of the workpiece below 5000 Hz compared to commercial accelerometers. The experiments verify that the devised PVSS can precisely measure vibrations during the milling process, and can be implemented for the purpose of detecting machining stability.

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“…Consequently, the total response containing the transient and steady-state response is obtained as Equation (11).…”

Section: Mathematical Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Machining Applications of the Piezoelectric Vibration Sensing System

Yang,

Li,

Akhmedovich

et al. 2023

JMMP

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show abstract

“…A tuning fork is a device made to have a specific frequency and can serve as a commonly used resonator [3], [4]. Physically the tuning fork consists of two arms (tines) and a handle forming the letter U and is made of various materials [1], [5]. Tuning forks can resonate with different frequencies that can be adjusted by placing an object on one of the tines [1], [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

“…Physically the tuning fork consists of two arms (tines) and a handle forming the letter U and is made of various materials [1], [5]. Tuning forks can resonate with different frequencies that can be adjusted by placing an object on one of the tines [1], [5]- [7]. Changes in temperature on the tuning fork affect the frequency produced [1], [2].…”

Section: Introductionmentioning

confidence: 99%

Experiment to Determine the Relationship Between Temperature and Tuning Fork Frequency

Hasan,

Natalisanto,

Zarkasi

2024

IPR

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A tuning fork is a special tool made of metal and shaped like the letter U with one handle. Tuning forks can produce certain frequencies; usually, the value is written on the handle. This study aims to investigate the relationship between temperature and changes in tuning fork frequency and model it using polynomial regression. This research uses laboratory experiments with tuning forks that have frequencies of 341.3 Hz, 426.5 Hz, and 512 Hz, then the temperature on the tuning fork is varied from 30C to 220C with a difference of 10C. The study's results adjusted R-Square values sequentially 0.94745, 0.99565, and 0.97721, which stated the relationship between temperature and frequency changes. The Adjusted R-Square value close to 1 means that changes in temperature on the tuning fork greatly influence changes in the frequency produced by the tuning fork. The polynomial regression model used is very suitable

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“…[7] There have been many energy harvesters used to collect energy in rotational motion. According to the principle of energy conversion, they can be roughly divided into four categories: electromagnetic induction, [8][9][10] electrostatic effect, [11][12][13] triboelectric, [14][15][16] and piezoelectric effect harvesters. [17][18][19] The electromagnetic induction generator uses the change of magnetic field in the coil to generate electricity, which has low power density, high cost, is not easy to miniaturize, and can generate magnetic interference to the surrounding equipment in some scenarios.…”

mentioning

confidence: 99%

An Inertial Noncontact Piezoelectric Rotary Energy Harvester with Linear Reciprocating Motion

Zheng,

He,

Jiang

et al. 2023

Physica Status Solidi (a)

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Herein, an inertial noncontact piezoelectric rotary energy harvester with linear reciprocating motion (L‐PREH) is presented. The existing piezoelectric rotary harvester employing gravity excitation has limited performance when the rotation speed is high due to the negative influence of centrifugal force. L‐PREH translates rotational motion into linear motion via the transmission chain and employs inertial force excitation to overcome high‐speed performance limitations. Using the Euler–Bernoulli beam theory, the motion governing equations of piezoelectric transducers have been derived, and an electromechanical coupling model has been constructed. Moreover, the piezoelectric transducer is simulated and analyzed. The control variable approach is used to explore the key parameters impacting output performance. When the mass is positioned in symmetrical method, the guide rod is fixed in noncentral place, the limiter is fixed in longest distance, the distance between the mass's center and the main frame is the maximum, and the rotating speed is 450 RPM, the maximum peak‐to‐peak output voltage of an L‐PREH single transducer is 24 V. The highest power of two piezoelectric transducers linked in parallel with a load resistance of 400 kΩ is 0.27 mW, which can light up more than 70 light‐emitting diodes. The L‐PREH can drive low‐power devices.

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A Frequency-Adjustable Tuning Fork Electromagnetic Energy Harvester

Cited by 8 publications

References 31 publications

Design and Machining Applications of the Piezoelectric Vibration Sensing System

Design and Machining Applications of the Piezoelectric Vibration Sensing System

Experiment to Determine the Relationship Between Temperature and Tuning Fork Frequency

An Inertial Noncontact Piezoelectric Rotary Energy Harvester with Linear Reciprocating Motion

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