import?numpy?as?np
import?random
import?matplotlib.pyplot?as?plt
import?math
import?datetime

class?PSO（）:
	#?PSO參數(shù)設(shè)置
????def?__init__（self?pN?dim?max_iter）:
????????#?迭代次數(shù)max_iter?=?1200?粒子數(shù)pN?=?50?
????????self.wmax?=?0.9
????????self.wmin?=?0.4
????????self.w?=?np.zeros（max_iter?dtype=float）??#?初始化每一代的權(quán)重w
????????self.c1?=?2
????????self.c2?=?1.6
????????self.pN?=?pN??#?粒子數(shù)量
????????self.dim?=?8??#?搜索維度????為8？？?8是我改的
????????self.max_iter?=?max_iter??#?迭代次數(shù)
????????self.Xmin?=?[-2?-2?-2?-2?-2?-2?-2?-2]?#?mine?參數(shù)搜索范圍
????????self.Xmax?=?[2?2?2?2?2?2?2?2]
????????self.Vmax?=?1?????????????????????#?mine?限定速度范圍
????????self.Vmin?=?-1
????????self.X?=?np.zeros（（self.pN?self.dim））??#?所有粒子的位置和速度
????????self.V?=?np.zeros（（self.pN?self.dim））
??????