Articles | Volume 15, issue 4
24 Jul 2008
 | 24 Jul 2008

A new method for abrupt change detection in dynamic structures

W. P. He, G. L. Feng, Q. Wu, S. Q. Wan, and J. F. Chou

Abstract. Based on Detrended Fluctuation Analysis (DFA), we propose a new method – Moving Detrended Fluctuation Analysis (MDFA) – to detect abrupt change in dynamic structures. Application of this technique shows that this method may be of use in detecting time-instants of abrupt change in dynamic structures and we even find that the MDFA results almost do not depend on length of subseries, and are less affected by noise.