PSO工具，用户只需要定义好自己需要优化的函数(计算最小值或者最大值)，并设置好函数自变量的取值范围、每步迭代允许的最大变化量(称为最大速度，Max_V)等，即可自行优化。-PSO tool, users only need to define their own needs optimization function (calculation of minimum or maximum), and set the good function from the range of variable