Digital twin-based resistance spot welding control
摘要
Resistance spot welding (RSW) is susceptible to high energy consumption, defects in the weld nugget, and difficulties in monitoring due to the influence of various factors. This study proposes a digital twin-based method for RSW process control and designed its architecture. First, an RSW multi-source heterogeneous data acquisition and mapping scheme was proposed. Subsequently, an RSW anomaly monitoring scheme based on virtual-real interaction and cloud-edge collaboration was proposed to effectively monitor anomalies throughout the entire RSW process. Then, an RSW process control strategy driven by digital twins and cloud-edge collaboration was proposed, enabling real-time adjustment of welding parameters to improve welding quality. Finally, the effectiveness of the proposed method was verified by applying it to the automobile welding workshop.