高强钢冷弯成型产品形状在线修正的研究。提出板材V型弯曲成型在线修正系统, 通过一个闭环反馈控制对成型角度偏差自动修正。-Research on Online Correction for Forming Error of Roll Forming. Based on the current research achievements of roll forming and the understanding of material properties, an online springback angle correction control system is proposed and developed in this paper to automatically correct the forming error. The Matlab software is used to simulate the control system and the angle of sheet metal is measured by angle sensor.