The inverter submerged arc welding machine and its auto-control system based on microchip are designed,the main topology,analog &digital control applied in the control system are analyzed in detail.

• 对逆变埋弧焊机的主电路、模拟控制技术、单片机数字控制技术以及埋弧自动焊控制系统的数字化控制技术做了详细的介绍。