Finite element analysis of a unimorph cantilever for piezoelectric energy harvesting

Wang, Qingping; Pei, Xuebing; Wang, Qi; Jiang, Shenglin

doi:10.3233/jae-2012-1597

Cited by 19 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the beam thickness is much less than the piezoelectric-induced curvature, so the second-order effects such as electrostriction can be ignored. At equilibrium, both axial forces and moments must sum to zero for any cross section of the spoke [15,16].…”

Section: Mathematical Modelsmentioning

confidence: 99%

Parametric design of mechanical dither with bimorph piezoelectric actuator for ring laser gyroscope

Long

2015

JAE

View full text Add to dashboard Cite

This paper presents a mathematical model and a finite element model to investigate the model parameters of mechanical dither in a ring laser gyroscope in which the bimorph piezoelectric actuator are employed as driving mechanisms to avoid the problem of so-called lock-in effects. The validity and efficiency of the mathematical model and finite element model are conformed by comparing with the sinusoidal experimental results, and the errors are 3.14% and 1.79% respectively. Moreover, the parametric design for the geometric dimensions of mechanical dither and the bimorph piezoelectric actuators is easily achieved through finite element model. It is shown that careful selection of the structural parameters allows the resonant frequency to be suitable. These results are important for the mechanical dither design and improvement of high accuracy ring laser gyroscopes and inertial navigation system.

show abstract

Section: Mathematical Modelsmentioning

confidence: 99%

Parametric design of mechanical dither with bimorph piezoelectric actuator for ring laser gyroscope

Long

2015

JAE

View full text Add to dashboard Cite

show abstract

“…Vibration-based energy harvesting has been exploited for converting ambient kinetic energy into electric energy and three mechanisms have been proposed: piezoelectric, electromagnetic and electrostatic [4,5]. Among these three transducers, piezoelectric energy harvesters are got much more attention as they have high electromechanical coupling effect and no external voltage source requirement; furthermore, they can be fabricated by MEMS technology easily [6,7].…”

Section: Introductionmentioning

confidence: 99%

Design, fabrication and performances of MEMS piezoelectric energy harvester

Gao

Cai

et al. 2015

JAE

View full text Add to dashboard Cite

MEMS piezoelectric energy harvester is optimally designed and fabricated, and its vibration characteristics, output voltage, power, power spectral density (SD) and frequency response function under harmonic and random excitation is studied by theory analysis, simulation and experimental test. For the designed MEMS piezoelectric energy harvester, the accurate solutions and expressions of amplitude, voltage, power and power spectral density are derived. Then, vibration characteristic, voltage, power and power SD with different load resistance, sinusoidal acceleration and random acceleration SD are simulated and tested; moreover, frequency response function of MEMS piezoelectric energy harvester is obtained by experimental test, and the results are consistent with theoretical model. When sinusoidal acceleration is 0.6 g, the maximal amplitude of mass is 116 µm and the power density is 0.1 mW/cm 3 . By testing results, output voltage of piezoelectric energy harvester is proportional to the amplitude, and the amplitude at optimal load is smaller than of at open circuit because of the feedback effect of load resistance. In addition, output power SD linearly increases with acceleration SD increasing. When acceleration SD is 5 × 10 −4 (m/s 2 ) 2 /Hz, power SD is 1.24 µW 2 /Hz.

show abstract

“…Photonic control of flexible shells using discrete and segmented rectangular PLZT wafers as distributed actuators have been investigated and these studies suggested that the PLZT photostrictive actuators can only expand (contract) along its polarization direction under the illumination of near ultraviolet light [5][6][7][8][9], so it has the deficiency of one-way actuation. Piezoelectric materials can be used as sensor, energy harvester [10,11] and actuator due to the direct and converse piezoelectric effects. Piezoelectric actuator can either expand or contract in their sensitive directions when external voltages are applied, so distributed active vibration control of flexible structures using piezoelectric materials have been widely studied [12].…”

Section: Introductionmentioning

confidence: 99%

Vibration control of cylindrical shells with a hybrid photovoltaic/piezoelectric actuation mechanism

Jiang

Wang

Yue

et al. 2014

JAE

View full text Add to dashboard Cite

Photovoltaic materials, which can directly turn light energy into electric energy, can offer the advantage of generating large voltages without external power supplies. When a near ultraviolet light illuminates on polarized PbLaZrTi (PLZT) materials, an electrical field can be generated along the spontaneous polarization direction due to the phovoltaic effect. This voltage generation mechanism exhibits many advantages, such as (1) high electrical output voltage, (2) wireless energy generation, (3) immune from electric/magnetic disturbances, (4) remote or non-contact control. In this study, Distributed vibration control of cylindrical shells using a hybrid photovoltaic/piezoelectric actuation mechanism is investigated. The light-driven photovoltaic generator induced voltage is used to drive a skew-quad piezoelectric actuator which can induce non-uniform control froces and control moments. Based on theoretical analysis and experimental validation, the constitutive equations defining the piezoelectric actuator induced actuation strain under the actuation mechanism are presented. Each region of the actuator system can induce both positive and negative control forces and moments using logical switches to shift the sign of control voltage of actuator system. Control effectiveness with constant light intensity control algorithm is evaluated and the time history analysis is presented.

show abstract

Finite element analysis of a unimorph cantilever for piezoelectric energy harvesting

Cited by 19 publications

References 0 publications

Parametric design of mechanical dither with bimorph piezoelectric actuator for ring laser gyroscope

Parametric design of mechanical dither with bimorph piezoelectric actuator for ring laser gyroscope

Design, fabrication and performances of MEMS piezoelectric energy harvester

Vibration control of cylindrical shells with a hybrid photovoltaic/piezoelectric actuation mechanism

Contact Info

Product

Resources

About