Extraction of the relative sensitivity model and improvement of the piezoelectric accelerometer performances

Abstract

The piezoelectric accelerometer is a sensor based on the direct effect of the piezoelectric material, this type of sensors used in large industries to monitor large rotating machinery. In this paper, a thorough study of the piezoelectric accelerometer is made to understand their physical behavior, then; the accelerometer has been modeled and related relationships are extracted from their mechanical and electrical parameters. The simulation of developed model allows choosing an appropriate value of damping rate which reduces the measurement error, improves the accuracy and makes the accelerometer more sensitive.