Abstract:

Aiming at the key problem, the optimization of fault diagnostic strategy,in the process of diagnostic design, an optimization method of systemlevel fault diagnosis strategy based on chaos particle swarm optimization (CPSO) is put forward.This method makes use of the character of chaos optimization which can traverse all the system states non-repetitiously guide the particle searching in the global scale. So it can overcome the PSO’s defect of “precocity”. This improved algorithm not only has a faster convergence rate, but also can ensure the reliability of optimum solution. It can provide a feasible method for optimizing system-level fault diagnosis strategy. Finally, the key steps in the process of diagnosis strategy are given by using CPSO, and the effectiveness of the proposed method is verified by a simulation experiment.