With the new method, a minimal path feeder vector can be constructed to produce reliability indexes of a complex distribution system with sub feeders and alternative suppliers.
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；
3
Then divides the highway network into four levels: main trunk line, sub-trunk, feeder and connecting line, and also positions functions of the four levels.