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This paper is mainly focused on piezoresistive accelerometer performance improvement. Thus a new model of this sensor is derived to enhance its various parameters, such as precision, sensitivity, and reliability. Moreover, applying this model, a new design of piezoresistive accelerometer can be achieved. The developed model is validated by simulations and confirmed by experimental tests to verify its effectiveness in industrial applications. The comparison study showed that the best choice of damping rate to reduce the measurement error and increase the precision corresponds to the rate chosen in this paper. The results have also demonstrated that a more reliable sensor can be designed compared with the existing designs. [ABSTRACT FROM PUBLISHER]

In this paper the queues are used as a method to improve maintenance performance. The information collected by vibration analysis is used to check the system status and see whether a maintenance operation is to be organized. Thus, for a precise decision, the improvement of accelerometer parameters is required. In order to solve this issue, the piezoresistive accelerometer step and impulse responses are enhanced by using appropriate parameters (damping rate and frequency range). Computer simulation tests were conducted to confirm this approach. The obtained results have shown the difference between the accelerometer with the proposed parameters and the accelerometer used in the experiment. It can be concluded that the proposed parameters provide stable and accurate accelerometer. [ABSTRACT FROM AUTHOR]

A piezoresistive accelerometer is the first element of a vibration measurement chain, and its improvement can enhance measurement quality. In this paper, we have developed a new formula that links the movement acceleration as a function of the natural frequency and the damping rate of the piezoresistive accelerometer in first time, and movement acceleration as a function of the measurement error in second time. This model allows the decrease of the acceleration measurement error and increases the accelerometer accuracy by choosing the right damping rate and frequency range. Finally, this new formula allows proposing new parameters for more accurate and reliable piezoresistive accelerometer. [ABSTRACT FROM AUTHOR]