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Abstract: The
hierarchically intelligent control theory is applied in order to realize
the fully digital control system for CO2 short-circuit welding. This
system integrates the digital PI controller, fuzzy controller and expert
system, which make control levels clearer and design scheme easier. The
experimental results validate this system can attain ideal waveform
control for CO2 short-circuit welding, increase welding arc stability,
improve welding process adaptability for the wire extension change and
control welding process intelligently.
Key
words: Fully
digital control CO2 short-circuit welding Hierarchically
intelligent control
CLC No: TG444
北京市自然科学基金资助项目(3032004).
Received 20050708, received in revised form 20051016
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