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윤석준(Seokjun Yoon),최배성(Baisung Choi),이형진(Hyeungjin Lee),김만철(Mancheol Kim),최성훈(Sunghoon Choi),신수봉(Soobong Shin) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
This paper shows an algorithm for identifying track irregularities using wavelet transfer function along the railway. An equivalent SISO wavelet transfer function is defined using continuous wavelet transform by the measured track geometry and acceleration at a bogie of a train. The estimated track geometry is made by inverse continuous wavelet transform from the regressed signals of measured acceleration signal and the pre-defined wavelet transfer function. The estimated rail irregularity geometry is evaluated by the coherence function and comparison of FRF(Frequency Response Function). As a result of evaluated outcome, This algorithm is regarded as appropriate for estimation of rail irregularity.