Format: HTML | BibTeX | DC | EndNote | NLM | MARC | MARCXML
000000153 001__ 153
000000153 037__ $$aENY-ARTICLE-2008-118
000000153 041__ $$aeng
000000153 088__ $$aI07/2004/I-018
000000153 100__ $$aSikorski, T$$uWroclaw University of Technology, Poland
000000153 245__ $$aTime-Frequency Representation for Non-Stationary Phenomena in Electrical Engineering
000000153 260__ $$c2004-06-15
000000153 300__ $$a4p
000000153 500__ $$aComputational problems of electrical engineering. Proceedings of the VIth international workshop, Zakopane, September 1-4, 2004. pp. 197-200
000000153 520__ $$aThe paper introduces two-dimensional method of observation and diagnosis of non-stationary signals in electrical engineering. To investigate the methods several experiments were performed using simulated signals. First two-dimensional representations are obtained applying Wigner and Wigner-Ville Distribution . Then local frequency moments are calculated to achieve one-dimensional characteristics. It is shown that such characteristics preserve information about the nonstationarity in point of time, and can be used for calculation of the beginning and duration time of transient states.
000000153 6531_ $$atime-frequency analysis
000000153 6531_ $$aWigner-Ville transform
000000153 6531_ $$anon-stationary signal
000000153 6531_ $$alocal frequency moment
000000153 6531_ $$ainstantaneous frequency
000000153 700__ $$aRuczewski, P$$uWroclaw University of Technology, Poland
000000153 700__ $$aLobos, T$$uWroclaw University of Technology, Poland
000000153 8560_ $$fzbigniew.leonowicz@pwr.wroc.pl
000000153 8564_ $$uhttp://zet10.ipee.pwr.wroc.pl/record/153/files/$$zAccess to Fulltext
000000153 909CO $$ooai:zet10.pwr.wroc.pl:153$$pglobal
000000153 980__ $$aARTICLE