Method of signal approximation in differential scanning calorimeter
- Authors: Nechaev A.S.1, Zhirnova A.P.1, Nechaeva I.N.1
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Affiliations:
- Samara State Technical University
- Issue: Vol 26, No 4 (2018)
- Pages: 82-91
- Section: Instrumentation, Metrology and Informative-measurings devices and systems
- URL: https://journals.eco-vector.com/1991-8542/article/view/21286
- DOI: https://doi.org/10.14498/tech.2018.4.%25u
- ID: 21286
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Abstract
The paper analyzes the methods of reconstructing time-local information signals used in differential scanning calorimeters (DSC) and makes a choice on wavelet functions. Based on the selected maternal wavelet, a technique was proposed for approximating the signals obtained experimentally with a DSC device. Approbation of the technique for single-peak and two-peak signals was carried out. Having the possibility to change the parameters of the approximating function in the course of the mathematical description of the signal, the possibility of using the technique for working with substances possessing endo- and exothermic properties at the time of the phase transition was proved. Evaluations of the effect of digitizing the signals on the accuracy of the measured differential temperature were given. As a result, the relative error was estimated by the approximating function when using the proposed technique from the number of iterative calculations performed.
About the authors
A. S. Nechaev
Samara State Technical University
Author for correspondence.
Email: info@eco-vector.com
Russian Federation
A. P. Zhirnova
Samara State Technical University
Email: info@eco-vector.com
Russian Federation
I. N. Nechaeva
Samara State Technical University
Email: info@eco-vector.com
Russian Federation