本文对用Ｌ_1-罚函数作线性搜索的约束变尺度算法，提出了一种新的修正方法，该方法的计算量小，可行性较好，并且仍能保持原有算法的收敛性．

In this paper, we propose a new method which modifies the variable metric method for constrained optimization via L1 penalty function. While this method preserves the convergence properties of the original method, it has lower computational time, and is more practical.