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IJSTR >> Volume 9 - Issue 9, September 2020 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



A Mathematical Modelling And 3D Simulation Of Zno Piezoelectric Base Cantilever For Pressure Sensing

[Full Text]

 

AUTHOR(S)

Maibam Sanju Meetei, Aheibam Dinamani Singh, Swanirbhar Majumder, Ome Moyong

 

KEYWORDS

moment of inertia, operation mode, piezoelectric voltage-coefficient, stress.

 

ABSTRACT

The main study in this work is to derive the mathematical model of the cantilever based pressure sensor. Two steps of mathematical modelling are being applied, mechanical and electrostatic, for finding the factors affecting the output of the sensor. Two main modes of operation for piezoelectric pressure sensor are transverse and longitudinal which are described in details. For 3D structure analysis, COMSOL 5.2 multiphysics simulator is used for simulation to validate the mathematical analyses output. A comparative analysis is done for simulated output of mechanical stress and the mathematical calculated stresses of the sensor. Similarly, the simulated output voltage and mathematical calculated voltage are also analyzed. The factors affecting the sensitivity of the sensor are the length, the thickness of the mechanical structure of the sensor, thickness of the sensing material and the piezoelectric voltage coefficient (g31). The output voltage of the sensor is linearly vary with the input pressure with negative slope. The sensitivity of the sensor for simulated is -0.012 mV/Pa and mathematical is -0.017 mV/Pa.

 

REFERENCES

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