Theoretical analysis of a resistance adjusting type piezoelectric cylindrical transducer

Wang, Jianjun; Wei, Peijun; Ji, Jianlong

doi:10.1177/1045389x17704068

Cited by 12 publications

(8 citation statements)

References 54 publications

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“…Recently, special application, such as the ultrasonic cleaning with the requirement for multi-frequencies (Lin and Xu, 2008), put forward the new demand for the performance of piezoelectric stack transducers. In the previous reports about the longitudinally sandwiched and radially cylindrical piezoelectric transducers, some methods have been tried to obtain the multi-frequency and wideband characteristics, including the resistance tuning method (Lin et al, 2018; Tian et al, 2018; Wang et al, 2015a, 2017, 2018), the approach of adjusting the ratio of piezoelectric layer numbers between the actuator and sensor parts (Wang et al, 2015a), the elastic foundation stiffness variable approach (Wang and Luo, 2016), the inductive matching technique (Lin, 2017; Lin and Xu, 2017), and the prestress control strategy (Arnold and Mühlen, 2001a, 2001b). Among these methods, the resistance tuning method and the ratio adjusting method are easy to implement and effective to obtain the multi-frequency characteristics.…”

Section: Introductionmentioning

confidence: 99%

Modeling and electromechanical performance analysis of frequency-variable piezoelectric stack transducers

Wang

Cai

Qin

et al. 2020

Journal of Intelligent Material Systems and Structures

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An exact analytical model of frequency-variable piezoelectric stack transducers is proposed, and their dynamic characteristics are studied in this article. Based on the linear piezoelasticity theory, the dynamic analytical solution is first derived, and then its correctness is validated by comparing it with the results of a special example in the previous literature and the ones of the experimental study. The effects of the tuning resistance and the layer number of the active element on the dynamic characteristics are discussed. Numerical results show that tuning the resistance and the layer number of the active element can enable the multi-frequency characteristics of the piezoelectric stack transducers. A proper layer number of the active element can minimize the short-circuited resonance frequency and the open-circuited anti-resonance frequency. These findings provide guidelines to design and optimize the piezoelectric stack transducers, which have promising potential in developing the multi-frequency Langevin transducers for some underwater sound and ultrasonic applications, such as ultrasonic cleaning, ultrasonic chemistry, and sonar radiators.

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Section: Introductionmentioning

confidence: 99%

Modeling and electromechanical performance analysis of frequency-variable piezoelectric stack transducers

Wang

Cai

Qin

et al. 2020

Journal of Intelligent Material Systems and Structures

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“…Material properties of electrode. 39,41,44,45 Electrode frequency curves can be measured using an impedance analyzer (model: Agilent 4294A), which are plotted in Figure 5. From these curves, the fundamental f r and f a can be obtained, which are further addressed in Table 4 for comparisons.…”

Section: Comparisons With the Experimental Resultsmentioning

confidence: 99%

Effects of electrodes and protective layers on the electromechanical characteristics of piezoelectric stack actuators

Wang

Qin

et al. 2019

Advanced Composites Letters

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Piezoelectric stack actuators are a type of excellent smart devices that can activate large power and displacement outputs due to their unique stack configuration and have been widely used in linear vibrators for various engineering applications. For the fabricated piezoelectric stack actuator, it usually consists of multiple thin piezoelectric wafers, multiple electrodes, and two protective layers. All the piezoelectric wafers are connected electrically in parallel through the electrodes and are protected by two protective layers at the two ends. However, in most of the theoretical models, the active piezoelectric portion is mainly considered, while the electrodes and protective layers are usually neglected to simplify the complicated problem, which results in an inaccurate prediction of the electromechanical characteristics. In our previously published work, the exact theoretical models of the piezoelectric stack energy harvester and sensor with the electrodes and the protective layers included have been established successfully to evaluate the electromechanical performance of these two types of devices, and their validity has verified by the experimental results. However, the exact theoretical model of the piezoelectric stack actuators has not been established, and the effects of the electrodes and the protective layers on the electromechanical characteristics of the actuator are not fully understood. In this article, the exact theoretical model of piezoelectric stack actuator was derived based on our previous work, and the effects of these two factors on the electromechanical characteristics were investigated. Comparisons with the results in the earlier literatures and the experimental results were presented to validate the model. Furthermore, two kinds of typical working states, including clamped–free (C-F) and free–free (F-F), were discussed. The results showed that neglecting the electrodes and the protective layers will greatly affect the accuracy of the prediction model, thus providing some valuable guidelines in designing the piezoelectric stack actuators.

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“…The piezoelectric layers are connected in series to obtain a more pronounced voltage signal (Wang and Shi, 2014). Then, the entire structure is connected with a resistor to adjust the electromechanical characteristics of the sensor (Wang et al, 2017).…”

Section: Model and Theoretical Solutionsmentioning

confidence: 99%

Electromechanical impact analysis of 2–2 cement-based piezoelectric sensor considering resistor

Zhang

Liu

2020

Journal of Intelligent Material Systems and Structures

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The model of the 2–2 type cement-based piezoelectric sensor, which is connected with a resistor while under the impact mechanical load, is established in this article. The dynamic theoretical expressions are acquired by utilizing the separation variable method and the matrix coefficient method and then used to analyze and discuss the electrical properties and the influence of the resistance value, which is verified correctly by numerical analysis. Also, the effect of resistor value and different material parameters on dynamic properties of such sensor is further investigated. And a reverse voltage is proposed to balance the displacement of the free-end and the stress of the fixed-end to enhance the safety. At last, the acoustic impedance ratio associated with the compatibility of the composite is discussed. The conclusions discussed in this work could provide some theoretical references for optimizing the design of the 2–2 cement-based piezoelectric sensor connected to electrical components in practical application.

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Theoretical analysis of a resistance adjusting type piezoelectric cylindrical transducer

Cited by 12 publications

References 54 publications

Modeling and electromechanical performance analysis of frequency-variable piezoelectric stack transducers

Modeling and electromechanical performance analysis of frequency-variable piezoelectric stack transducers

Effects of electrodes and protective layers on the electromechanical characteristics of piezoelectric stack actuators

Electromechanical impact analysis of 2–2 cement-based piezoelectric sensor considering resistor

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