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    an inverter£­ type power supply and fuzzy control for co2 arc welding

    abstract:based on the foundation of analysis of co2 welding process,a constant current (cc)igbt inverter is developed.in case of different droplet£­ transfer forms,fuzzy control schemes of arc length and short£­ circuit frequency are put forwords.it is indicated by experiments that the existing shortcomings of co2 welding can be overcome,and are states controlled more easily.

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