The relation between modifying of BHF and error of the blank draw-in is built by introducing time series analysis, and the gain factors are identified by using non-linear least square solver.

• 引入时序分析法，将压边力的调整与反映工件成形质量的法兰边的吸入量误差联系起来，同时应用非线性最小二乘法识别出增益系数。