Distribution of relaxation times for effect identification and modeling of impedance spectra

Autor:	Thomas Günther, Paul Büschel, Olfa Kanoun
Rok vydání:	2014
Předmět:	Identification (information) business.industry Frequency domain Electronic engineering Medicine Device under test Relaxation (approximation) business External Data Representation Algorithm Electrical impedance Domain (software engineering) Dielectric spectroscopy
Zdroj:	I2MTC
DOI:	10.1109/i2mtc.2014.6860872
Popis:	Impedance spectroscopy provides an increased amount of information with one measurement. The drawback is that a suitable model as well as a reliable fitting is needed for data evaluation. Therfore a suitable data representation is needed that serves two purposes. First it should help to identify processes within the device under test as a support for building a model and it should give some initial values for parameterization. The distribution of relaxation times (DRT) provides such a data representation. It transforms impedance data from the frequency domain to a time constant domain were different relaxation mechanisms can be separated more easily and sometimes their type can be identified using the shape of the DRT. In an example the DRT is used to identify mechanisms and to build a suitable model for the impedance data analysis of battery aging data.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1fb11d2da941bbc06f4385fff9da8e3b https://doi.org/10.1109/i2mtc.2014.6860872 Zobrazit plný text záznamu