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- Article name
- IDENTIFICATION OF DYNAMIC SYSTEMS MATHEMATICAL MODELS BY DIGITAL LAPLACE TRANSFORMATION METHOD
- Authors
- Ulyanov A. V., , Ulianov@npg.ru, Joint Stock Company "Experimental Scientific-Research Institute of Metal-Cutting Machine Tools, Moscow, Russia
- Keywords
- mathematical model / identification / additive noise / transformation of the Laplace
- Year
- 2010 Issue 2 Pages 105 - 110
- Code EDN
- Code DOI
- Abstract
- Possibility of practical application in computing Mathсad environment of digital Laplace transformation (DLT) method for identification of linear dynamic systems is shown. The method allows to receive all kinds of frequency characteristics of investigated system within one experiment and yields correct results at additive noise level no more ± 5-7 % from a useful signal level. If the noise level exceeds specified limits, then method DLT leads to incorrect conclusions concerning structure and parameters of identified system. For such cases the original method of a signals digital filtration is offered and approved. It allows sharply to reduce a noise level and to provide identification reliability.
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