一个系统使用两个拉丝珠作为执行器，再加上两个对拉丝珠下游的薄板力敏感的模内传感器，证明了局部力控制的有效性。比较了围绕这些传感器输出闭合回路和围绕拉延筋穿透闭合回路的更传统方法。结果表明，与简单的位置控制不同，闭环力控制能够抑制摩擦条件变化等典型过程干扰。这使得尽管存在这些干扰，仍能保持一致的冲压载荷轨迹。 此外，双独立拉丝珠允许系统补偿非对称（关于零件几何）干扰，从而保持工艺平衡。

A system using two drawbeads as actuators coupled with two in-die sensors which are sensitive to sheet forces downstream from the drawbeads demonstrates the usefulness of localized force control. A comparison is made between closing the loop around these sensor outputs and the more traditional approach of closing the loop around drawbead penetration. It is shown that unlike simple position control, closed-loop force control is able to reject typical process disturbances such as changing friction conditions. This makes it possible to maintain consistent punch load trajectories in spite of these disturbances. Furthermore, the dual, independent drawbeads allow the system to compensate for non-symmetrical (with respect to part geometry) disturbances so that process balance can be maintained.