在普通粒子群优化的基础上引入环境概念，在粒子进行速度及位置的更新之前，先进行粒子与周围环境的比较，选取较优的粒子，从而提高精度-In normal particle swarm optimization is introduced on the basis of environmental concept, particle velocity and position in the update before, first compare particles and the surrounding environment, select the optimal particle, thus improve the precision