Modeling and enhancement of mechanical sensitivity of vibration sensor

Abstract

In this paper, the mechanical sensitivity of a vibration sensor is investigated by developing a mathematical model with the function of a relative movement modulus and measurement error. This model enables mechanical sensitivity to be improved by enhancing the performance of the vibration sensor. The purpose of the present work is to reduce measurement error by choosing the right damping rate that enables vibration sensor sensitivity to be optimized. The presented model is validated by computer simulation and experimental tests. The obtained results have shown that correct choice of damping rate and frequency range keeps the mechanical sensitivity constant.

Modeling the material structure and couple stress effects of nanocrystalline silicon beams for pull-in and bio-mass sensing applications

“…Substituting equation (33) into equations (13) and (15), and considering only the linear part of the electrostatic force yields to the following equation of motion and associated boundary conditions which describe the dynamics of the resonator/bio-mass sensor about its static deflection ( ) s w x :…”

“…Moreover, controlling the damping rate and the frequency ratio for excited cantilevers can enhance the sensitivity of the mechanical resonator [13]. Electrostatically-or piezoelectrically-actuated cantilever beams have shown enhanced sensitivity of the resonant frequency shift to variations in the added mass [14][15][16][17].…”

New model of piezoelectric accelerometer relative movement modulus

“…This sum can be represented by algebraic equations, differential equations and recurrent relationships (Li, 2009). The development of an accelerometer mathematical model is explained in detail in Ghemari and Saad (2013b).…”

“…These operations are signal generation, signal decomposition and signal spectrum calculation. The purpose of signal conversion from the time to the frequency domain is to identify the frequencies of vibration (Ghemari and Saad, 2012, 2013a, 2013b.…”

Operational Modal Analysis of a Suspension Bridge Using a Single Accelerometer: Simulation and Eigenfrequency Identification

“…">IntroductionVibration analysis stands as a cornerstone in the realm of mechanical engineering and structural health monitoring, providing a powerful tool for understanding the dynamic behavior of systems subjected to mechanical oscillations [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. This discipline involves the study and interpretation of vibrational patterns and characteristics within structures or machinery, offering insights into their performance, integrity, and potential issues [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35].As mechanical systems and structures continuously experience various forces and external stimuli, they respond with intricate vibrational patterns that carry valuable information about their condition [36][37][38][39][40][41][42][43][44][45]. Vibration analysis, therefore, serves as a diagnostic method to decipher these patterns, enabling engineers and analysts to gain a comprehensive understanding of a system's health, identify potential faults, and optimize its performance [46][47][48][49][50][51][52][53][54][55][56].Key components of vibration analysis include the study of frequencies, amplitudes, and phase relationships in vibrational signals.…”