说明：  在粒子群算法运行中,容易出现局部最优,为此设粒子本身有弹力,在聚集的同时散开,避免早熟现象的出现.
(Particle swarm optimization in operation, prone to local optimum, for which established itself elastic particles, dispersed in the gathering at the same time to avoid the emergence of the phenomenon of precocious puberty.)