The hardware of the system comprises the five sub-systems, i. e. welding power source, arc length controller, welding wire feeder, welding head traveller and detector.
此系统的硬件主要包括五个子系统，即：焊接电源、弧长控制器、送丝机构、焊矩行走机构和检测机构；
We also choose the type of stable voltage direct current and frequency conversion motor, and design the hardware circuit of the sub-systems.
根据控制要求对直流稳压电源、变频器等其它硬件进行了选型，并对系统各部分硬件电路进行设计。
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