CORRECTION OF TEMPERATURE INFLUENCE ON A PIEZOELECTRIC ACCELEROMETER
DOI:
https://doi.org/10.24025/2306-4412.1.2019.166321Keywords:
accelerometer, acceleration, piezoelement, phase filter, automatic control system.Abstract
In the article the possibility of compensation of non-informative component in measured signal obtained with the help of a piezoelectric accelerometer in the measurement of vibration acceleration is considered. This non-informative component in measured signal represents a constant level, which is caused by the generation of additional charge by piezoelectric element of the accelerometer in the absence of action on it from the side of the measurement object. The indicated additional charge is generated under the influence of environment temperature fluctuations. These temperature fluctuations add their negative component to the precision of the accelerometer, increasing the error of the measurement result. The greater their range of fluctuations in temperature and the rate of change in temperature over time are, the greater impact on the measurement results is obtained. Since the changes in temperature over time, in comparison with the frequency of measured vibrations, are much slower processes and their impact on the measurement results is constant throughout the dynamic range of the accelerometer, they represent an additive component of the error of the measurements. To reduce the influence of environment temperature, a solution for the improvement of piezoelectric accelerometer by introducing an element of compensation into its construction is proposed. In order to reduce the influence of environment temperature fluctuations on the measurement results, a controlled piezoelectric element which operates on reverse piezoeffect along the polarization axis is used as a compensation element. The control by the compensation element is carried
References
1. Antonenko, A. М., Kudzin A. Yu., Gavshin M. G. (1997). Influence of domain structure on electromechanical properties of PZT and MNWT ferroelectric ceramics. Fizika tverdogo tela. Moscow: FTI im. A. F. Ioffe, vol. 39, No. 5 [in Russian].
Gorish, A. V., Dudkevich, V. P., Kupriyanov, M. F. et al. (1999). Piezoelectric instrument engineering, vol. 1. Physics of ferroelectric ceramics. Moscow: Izd. predpr. red. zhurn. "Radiotehnika", 368 p. [in Russian].
Sharapov, V. M., Musienko, M. P., Sharapova E. V. (2006). Piezoelectric sensors. Moscow: Technosphere, 632 p. [in Russian].
Aheikin, D. I., Kostina, E. N., Kuznetsov, N. N. (1965). Sensors for control and regulation. Moscow: Mashinostroenie, 914 p., ill. [in Russian].
Osadchiy, E. P. (1979). Design of sensors for measuring mechanical quantities. In E. P. Osadchiy (Ed.). Moscow: Mashinostroenie, 480 p., ill. [in Russian].
Ostrom, K., Vittenmark, B. (1987). Control systems with computers. Moscow: Mir, 480 p., ill. [in Russian].
Dorf, R., Bishop, R. (2002). Modern management systems. Moscow: Laboratoriya Bazovyh Znanij, 832 p., ill. [in Russian].
Kim, D. (2003). The theory of automatic control, vol. 1. Linear systems. Moscow: FIZMATLIT, 220 p., ill. [in Russian].
Downloads
Published
How to Cite
Issue
Section
URN
License
Copyright (c) 2020 А. Л. Передерко The authors who publish in this journal agree to the following terms:The authors reserve the right to authorship of their work and give the journal the right to first publish this work under the terms of the Creative Commons Attribution License CC BY-NC, which allows other persons to freely distribute published work with a mandatory reference to authors of the original work and the first publication of the work in this journal.
Authors have the right to conclude separate additional agreements for the non-exclusive distribution of the paper in the form in which it was published by this journal (for example, posting work in electronic repository or publishing as part of a monograph), provided that the link to the first publication in this journal is maintained.
The journal policy allows and encourages authors to post on the Internet (for example, in repositories of institutions or on personal websites) the manuscript of work, both before the submission of this manuscript to the editorial staff, and during its editorial work, as it contributes to the emergence of productive scientific discussion and positively affects the efficiency and dynamics of published work citation (see The Effect of Open Access).
