Magnitude Versus Frequency Performance of Vibration Acceleration Sensor Based on Cymbal Transducer

2008 ◽  
Vol 368-372 ◽  
pp. 226-229
Author(s):  
Deng Hua Li ◽  
Shu Hui Yang ◽  
Jing Min Gao ◽  
Yong Cheng Ma
Keyword(s):  
Piezoelectric Coefficient ◽  
Damping Coefficient ◽  
Voltage Sensitivity ◽  
Acceleration Sensor ◽  
Elastic Coefficient ◽  
Vibration Acceleration ◽  
Prestressing Force ◽  
Cymbal Transducer ◽  
Metal Ceramic ◽  
Nature Frequency

The magnitude versus frequency performance for a vibration acceleration sensor based on metal-ceramic piezocomposite transducer (cymbal) was studied in this paper. The results showed that the voltage sensitivity of this new sensor is as a function of not only the effective piezoelectric coefficient, d33 e, elastic coefficient, ky, and the resonance frequency, f0, of the cymbal transducer, but also the relative damping coefficient, ξ, of this new sensor. The relative damping coefficient, ξ, is also as a function of the capacitance, C0, of the cymbal transducer and a function of the mass, m, of the sensor, which is used as a prestressing force. The magnitude versus frequency plot for this vibration acceleration sensor was constructed. The results showed that the magnitude versus frequency performance of this new sensor changes as the relative damping coefficient, ξ, varies. The magnitude versus frequency performance is not dependent on the relative damping coefficient, ξ, when the ratio of operation frequency to the nature frequency, ω /ω0, is less than 0.2.

Research on the Voltage Sensitivity of Differential Cymbal Piezoelectric Vibration Acceleration Sensor

2014 ◽  
Vol 705 ◽  
pp. 208-213
Author(s):  
Hui Gao ◽  
Deng Hua Li ◽  
Bi Zheng Dong
Keyword(s):  
Experimental Data ◽  
Mathematical Model ◽  
Output Voltage ◽  
Structural Features ◽  
Order System ◽  
Voltage Sensitivity ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Cymbal Transducer ◽  
Piezoelectric Vibration

To improve the sensor's output voltage sensitivity, two cymbals piezoelectric transducer are employed as the sensitive elements to form a differential cymbal piezoelectric vibration acceleration sensor. The structural features of the sensor are analyzed, second-order system mathematical model is established and the output voltage sensitivity of the sensor is also studied. The experimental results show that output voltage sensitivity of differential cymbals piezoelectric vibration acceleration sensor is two times of that of the sensor with single cymbal transducer. The experimental data agrees well with the theoretical analysis result.

Research on Transverse Sensitivity Property of Cymbal Piezoelectric Vibration Acceleration Sensor

2011 ◽  
Vol 301-303 ◽  
pp. 1495-1500 ◽  
Author(s):  
Cheng Zhe Li ◽  
Deng Hua Li ◽  
Shuang Zhai ◽  
Jin Ao Li
Keyword(s):  
Voltage Sensitivity ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Transverse Sensitivity ◽  
Sensitivity Ratio ◽  
Compensation Methods ◽  
Acceleration Sensors ◽  
Orthogonal Methods ◽  
And Control ◽  
Piezoelectric Vibration

For the problem of higher transverse sensitivity ratio of the cymbal piezoelectric vibration acceleration sensors, a mathematical model of output voltage sensitivity is established which employ orthogonal and array methods to reduce the transverse sensitivity ratio of the piezoelectric vibration acceleration sensor. Two compensation methods are designed. The results showed that the array and orthogonal methods can decrease the effect of the transverse interference of acceleration sensor effectively and control the relative error in a smaller range, improve the measurement accuracy of the sensors.

scholarly journals Simulation Analysis on Cymbal Transducer

2011 ◽  
Vol 2-3 ◽  
pp. 140-143
Author(s):  
Qing Feng Yang ◽  
Peng Wang ◽  
Yu Hong Wang ◽  
Kai Zhang
Keyword(s):  
Finite Element ◽  
Resonance Frequency ◽  
Piezoelectric Ceramic ◽  
Electromechanical Coupling ◽  
Free Field ◽  
Voltage Sensitivity ◽  
Element Analysis ◽  
Cavity Bottom ◽  
Finite Element Software ◽  
Cymbal Transducer

The resonance frequency of the cymbal transducer ranges from 2kHz to 40kHz and its effective electromechanical coupling factor is around 20%. Finite element analysis has been performed to ascertain how the transducer’s makeup affect the transducer’s performance parameters. Two-dimensional axisymmetric model of the cymbal transducer was founded by finite element software-ANSYS, the application of the element type was discussed and the FEM models were built up under the far field condition. Eight groups of cymbal transducers of resonance frequency around 3kHz with different structural dimensions were designed. It was better for choosing the cymbal transducer of the 8mm cavity coping diameter, 20.8mm cavity bottom diameter and 26.8mm piezoelectric ceramic wafer diameter than others for reducing distortion degree of the signal and improving communication turnover in the researched cymbal transducers. It was appropriate for choosing the cymbal transducer of the 8mm cavity coping diameter, 22.4mm cavity bottom diameter and 26.4mm piezoelectric ceramic wafer diameter in order to improve the free-field voltage sensitivity and transmission efficient.

Research on voltage sensitivity of vibration accelerometer based on cymbal transducer

2007 ◽  
Vol 21 (1-4) ◽  
pp. 770-773 ◽  
Author(s):  
Wang Lina ◽  
Li Denghua ◽  
Jia Meijuan ◽  
Ju Weijun
Keyword(s):  
Voltage Sensitivity ◽  
Cymbal Transducer

On measuring key parameters of an electro-impulse deicing system

2018 ◽  
Vol 233 (6) ◽  
pp. 2321-2328 ◽  
Author(s):  
Qian Du ◽  
Chunling Zhu
Keyword(s):  
Measuring Method ◽  
Pulsed Current ◽  
Experimental Setup ◽  
Test Results ◽  
Peak Acceleration ◽  
Acceleration Sensor ◽  
Vibration Acceleration ◽  
Peak Current ◽  
Two Parameters ◽  
Piezoelectric Vibration

The peak current and vibration peak acceleration are two important parameters in the electroimpulse deicing system. Available data on two parameters are sparse. An experimental setup to measure the peak current and vibration peak acceleration in the electroimpulse deicing system is presented. The measurement is performed in the icing wind tunnel. Rogowski coil’s principle on pulsed current measurement is applied in the electroimpulse deicing discharge current circuit. It is found that calculated results agree with the measured trend. A piezoelectric vibration acceleration sensor is adopted to measure the vibration peak acceleration. Test results show that when the peak current varies linearly, the vibration peak acceleration increases with the increase of discharge voltages and its variation is approximately linear. The experimental results in the electroimpulse deicing system demonstrate that the proposed measuring method is accurate and reliable.

scholarly journals Characteristics Research of a High Sensitivity Piezoelectric MOSFET Acceleration Sensor

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4988
Author(s):  
Chunpeng Ai ◽  
Xiaofeng Zhao ◽  
Dianzhong Wen
Keyword(s):  
High Sensitivity ◽  
Oxide Semiconductor ◽  
Voltage Sensitivity ◽  
Test Results ◽  
Acceleration Sensor ◽  
Piezoelectric Beam ◽  
Silicon Cantilever ◽  
Gate Control ◽  
Piezoelectric Acceleration ◽  
Peak Value

In order to improve the output sensitivity of the piezoelectric acceleration sensor, this paper proposed a high sensitivity acceleration sensor based on a piezoelectric metal oxide semiconductor field effect transistor (MOSFET). It is constituted by a piezoelectric beam and an N-channel depletion MOSFET. A silicon cantilever beam with Pt/ZnO/Pt/Ti multilayer structure is used as a piezoelectric beam. Based on the piezoelectric effect, the piezoelectric beam generates charges when it is subjected to acceleration. Due to the large input impedance of the MOSFET, the charge generated by the piezoelectric beam can be used as a gate control signal to achieve the purpose of converting the output charge of the piezoelectric beam into current. The test results show that when the external excitation acceleration increases from 0.2 g to 1.5 g with an increment of 0.1 g, the peak-to-peak value of the output voltage of the proposed sensors increases from 0.327 V to 2.774 V at a frequency of 1075 Hz. The voltage sensitivity of the piezoelectric beam is 0.85 V/g and that of the proposed acceleration sensor was 2.05 V/g, which is 2.41 times higher than the piezoelectric beam. The proposed sensor can effectively improve the voltage output sensitivity and can be used in the field of structural health monitoring.

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