Abstract: As a new swarm itelligent algorithm, Particle Swarm Optimization(PSO ) algorithm has been attented and studied by many people. This paper mainly studied on the new algorithm that formed by PSO combining with neural network. Taking chaos phenomina of permanent magnet synchronous motor as a object, the new algorithm achieves controlling it. I}hc results of the expriments indicate the algorithm is feasible. At the same time, It proves the PSO optimizing neural network having some actural value.

Key words: Particle swarm optimization(PSO) , Neural network, Permanent magnet synchronous motor, Chaos