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回顾了焊缝检测用自动爬行器与P扫描成像仪配套应用研究的国内外现状；介绍了自动爬行器的计算机控制电路、同步电机驱动电源和爬行器的机械结构。
The status quo of the application research of automatic creeper and P-scan imager for weld inspection is reviewed. The computer control circuit of automatic creeper, the driving power of synchronous motor and the mechanical structure of the crawler are introduced.