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With digital welding power production and application research of wire machines control mode to reform the traditional also should control mode is simulated by numerical control gradually replaced with digital welding power source of the digital wire machine is an inevitable trend of research and development. Gas is extremely high melting electric arc welding technology, the quality of wire directly influences the quality of welding. Melt in the welding wire, uneven causes welding changes, which affects the quality of welding, In the melting of the arc welding wire, wire uneven will melt uneven, melting, thereby affecting the intermittent even forming and welding quality. Therefore, smooth and steady wire is an important guarantee of the quality of welding conditions.This undergraduate course graduation design, the main research work extremely electric welding gas protection melting of wire motor driving control system, and the slow wire, arc welding parameters arc and according to ascend to the target wire feeding speed. Are-receive first attenuation wire speed, subsequently are-receive stop immediately wire. Request the system satisfies the welding gas protection melting performance requirements.Based on SG3525A PWM control circuit and the study, based on the design of the hardware structure of wire. Wire structure by wire main circuit, drive circuit and control circuit, electric wire linear circuit and braking circuit. Protel and related software draw circuit. This feedback loop control circuit of the stable precise wire, improve the welding quality. |
