Dynamic control modeling of the GMA welding system using the system identification and weld pool width control

시스템 식별을 이용한 GMA 용접 시스템의 동적 제어 모델링과 용융지폭 제어

Designing a feedback controller requires a dynamic model of the process to be controlled. But the GMA welding process models have not been fully developed for many reasons such as complexity of the welding process and lack of reliable sensors. Because of the complexity of the welding system, we obtained a dynamic model for control using system identification routines, rather than derived a model from fundamental physical laws. The controller was designed based on the experimentally derived linear dynamic model of the welding process. In order to demonstrate application of the designed controller, the simulation was carried out.