为了加强全局搜索能力和收敛到全局最优解，给出了同步变化和异步变化学习因子改进的粒子群算法.通过对同一个多元复杂函数求最小值对比分析两种方法。-In order to strengthen the global search ability and convergence to the global optimal solution, given changes in synchronous and asynchronous learning factor changes improved particle swarm algorithm through the same function for the minimum diverse and complex comparative analysis of both methods.