Design and Research of Anti-Interference for Control System of Automatic MIG Welding Machine

Abstract

Based on the tasks of automatic MIG welding machine, in this paper, a SCM control system of welding machine is presented and its anti-interference design is carried out. Some hardware measures are used to resist interference, including power supply anti-interference, channel anti-interference, space anti-interference, selection of components, circuit layout and hardware "watchdog". Redundant instruction, software "trap", software "watchdog" and other software anti-interference measures are also adopted. NB-500IGBT inverter welding machine is used for welding test and the results show that the above mentioned hardware and software anti-interference measures are effective to solve the interference for control system of automatic MIG welding machine.