Recognition of Time-frequency Image Ridge by PSO

Characteristic parameters identification of mechanical structure is an important part of modal analysis. These ridges can carry much information of system characteristic parameters. Recognition of the ridges in time-frequency space is addressed in this paper by making use of the so-called PSO (particle swarm optimization) technique. Furthermore, the simulation experiments are implemented in order to evaluate precision of this method and the robustness of noise. The simulation experiment results prove that this method is fast and simple, with high accuracy, less iterations and small noise. PSO is shown to be a promising method to solve ridge recognition problems regarding, in particular, according to the results herein obtained.