Theoretical analysis of a new adjustable broadband PZT beam vibration energy harvester

Huang, Shyh‐Chin; Tsai, Chao-Yang

doi:10.1016/j.ijmecsci.2015.11.027

Cited by 13 publications

(5 citation statements)

References 35 publications

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“…Experimental results have verified the importance of piezoelectric patches for the structural stability of satellites [14]. A piezoelectric voltage equation is also developed based on the structure combination theory in which voltage is dependent on frequency [15]. A modal analysis has exhibited how piezoelectric plates can behave differently from piezoelectric beams, in which the results have been predicted by a numerical solution using the Hamilton-Jacobi equation [16,[28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

et al. 2017

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Piezoelectric materials are widely used as smart structures in cubic reconnaissance satellites because of their sensing, actuating, and energy-harvesting abilities. In this study, an analytical model is developed in specific mechanical thermal shocking conditions. A special circuit and apparatus is designed for experimentation on the basis of the inverse piezoelectric effect. An equivalent circuit method is used to establish the relationship between the resistance and peak-to-peak voltage of lead zirconate titanate used as smart materials for cubic reconnaissance satellites. Various frequencies and resistance were applied in different mechanical thermal shocking conditions. Moreover, numerical simulations are conducted in various mechanical loading conditions to determine the accumulative effect. The model provides a novel mechanism to characterize the smart structures in cubic reconnaissance satellites. A rise in temperature increases peak-to-peak voltage; a rise in frequency decreases peak-to-peak voltage; and intensified resistance decreases peak-to-peak voltage. Based on experimentation and simulation, the optimum resistance is predicted for the various frequencies and temperatures. The various conditions may correspond to the different applications of smart structures for cubic reconnaissance satellites. The analytical calculations are in good agreement with experimental and numerical calculations.

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Section: Introductionmentioning

confidence: 99%

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

et al. 2017

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“…4, using Eqs. ( 25) and (26). In what follows, the dimensionless time constant ratio is assumed to be one ( = 1).…”

Section: -Results and Discussionmentioning

confidence: 99%

“…Hence, novel designs have been increasingly perused to cope with this challenge and capturing the channeled energy in an efficient way [22,23]. Firstly, the idea of integrating active/passive tuning mechanisms was investigated to match the excitation and PVEH resonance frequencies [24][25][26]. However, this tuning adds to the complexity and decreases the efficiency of PVEHs [27].…”

Section: -Introductionmentioning

confidence: 99%

Energy harvesting from the secondary resonances of a nonlinear piezoelectric beam under hard harmonic excitation

2020

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This paper investigates the dynamical response of a nonlinear piezoelectric (PZT) energy harvester under a hard harmonic excitation and assesses its output power. The system is composed of a unimorph cantilever beam with a tip mass and exposed to an harmonic tip excitation with a hard forcing amplitude. First, the governing dimensionless nonlinear electromechanical ordinary differential equations (ODEs) are obtained. Next, the multiple scales method (MSM) is exploited to provide an approximate-analytical solution for the ODEs in hard and soft forcing scenarios. It is observed that, the hard force results in suband super-harmonic resonances. The MSM-based solutions are then validated by a numerical integration method and a good agreement is observed between the approximate-analytical and numerical results. Furthermore, utilizing the MSM-based solutions for the subharmonic, superharmonic, and soft primary resonances cases, the associated frequency and force response curves are constructed. It is revealed that the hard excitation leads to a remarkable voltage generation in the secondary resonances; this leads to a broadband energy harvesting. In addition, the time-domain electrical responses of the secondary resonances are also obtained and compared with each other. Finally, the three-dimensional graphs of the electrical power versus detuning parameter and time constant ratio in the cases of the secondary resonances are plotted. The results show that the optimum output power of the superharmonic resonance is considerably larger than the maximum power of the subharmonic resonance case.

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“…The vibrational performance of the piezoelectric transducers incorporated into three micropumps is tested under forced vibration conditions with PSV400 scanning vibrometer. [33][34][35] Fig. 7 shows the schematic of vibration displacement.…”

Section: Vibration Measurement Of Piezoelectric Transducermentioning

confidence: 99%

Experimental Investigation of Piezoelectric Micropumps with Single, Series or Parallel Pump Chambers

Guan¹,

Bai²,

Meng³

et al. 2020

The International Journal of Acoustics and Vibration

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Three types of piezoelectric micropumps following different configurations: single, series, and parallel connection, are developed and investigated. All the micropumps are fabricated by wet etching technology and sealed by high temperature glass bonding. They share the same dimension characteristic of diffuser/nozzle microchannels. Verifying the impact of adding series or parallel connected pump chambers on single chambers, as well as verifying the performance of the flow rate, pressure and piezoelectric transducer vibration of three micropumps have been examined. Through the comparisons between three kinds of micropumps, the results show that the flow rate of the micropumps with parallel connected pump chambers have a higher flow rate than that of micropumps with single and serial connected pump chambers under the same driving conditions. In addition, both the flow rate and pressure with the serial micropump are the lowest. The pressure of the micropump with single pump chamber is larger than other kinds of micropumps at certain driving frequencies. Consequently, increasing the pump chambers cannot always increase the performance of the micropump. This coincides with the theory analysis. Finally, the vibration performance of piezoelectric transducers with three micropumps have been carried out. The parallel transducer has a higher vibration displacement than the other two kinds of micropumps. These results have great potentials for integration into labs with a chip or microfluidic driven systems.

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Theoretical analysis of a new adjustable broadband PZT beam vibration energy harvester

Cited by 13 publications

References 35 publications

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

Effects of variable resistance on smart structures of cubic reconnaissance satellites in various thermal and frequency shocking conditions

Energy harvesting from the secondary resonances of a nonlinear piezoelectric beam under hard harmonic excitation

Experimental Investigation of Piezoelectric Micropumps with Single, Series or Parallel Pump Chambers

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