Composite plate low energy impact localization system based on FBG sensing network and hybrid algorithm
FBG network and a high speed interrogation system were used to detect impact signals. Shannon wavelet transform was employed to extract time differences. Nonlinear equations model of impact localization was established by the time differences and the coordinates of FBGs. The coordinate of impact source was obtained by quasi-Newton algorithm and PSO algorithm. The experimental results validated the impact localization system and algorithm.
impact localization shannon wavelet transform nonlinear equations model quasi-newton fiber bragg grating particle swarm optimization