Abstract: Aiming at the problem of the measurement accuracy on the fume formation rate of GMAW, a test equipment for measurement and control system of welding fume formation rate was developed by studying the signal detection and control equipment in the measurement of welding fume formation rate. The welding process parameters were measured or controlled accurately in terms of welding current, welding voltage and welding speed in the GMAW welding process. The motion control system, suction filter system and data acquisition system were designed and control timing of the system was established through the analysis of the detection and control process of the measurement system.The realtime monitoring of the measurement process was achieved, and the acquisition, analysis and storage of data automatically was completed by applying the LabVIEW platform.The results indicate that the system can realize the measurement and control functions of welding process parameters, and the measurement accuracy and precision can meet the design requirements.
Key words: gas metal arc welding（GMAW）; data acquisition; fume formation rate（FFR）; LabVIEW