外点法用于解决已知函数并且有约束条件的问题，将采用惩罚函数使得在约束条件外其值变得很大而约束条件内值很小，从而在约束条件下通过迭代找到最小点。-External point method is used to solve the problem of known function and constraints, the penalty function such that its value constraints becomes large and constraint conditions is very small, the minimum point in the constraints found by iteration.