空气等离子切割机引弧策略  

Arc striking strategy for air plasma cutting machine

作　　者：韩明[1] 杨程[2] 蔡涛[1] 胡宏晟 王涛[1] 

机构地区：[1]华中科技大学电气与电子工程学院,湖北武汉430074 [2]中国舰船研究设计中心,湖北武汉430064

出　　处：《电焊机》2017年第2期47-53,共7页Electric Welding Machine

摘　　要：空气等离子切割机的传统引弧控制策略为恒流控制,导致引弧电阻功率等级高且需要实时采样引导弧电流。提出了改进的引弧控制策略,无需检测引导弧电流即可增加引导弧电流线性,在保证引弧成功率的前提下,极大降低了引弧电阻的功率等级,并减少电流传感器的使用,降低成本,同时能灵活调节引导弧的强烈程度。实验结果验证了改进的引弧控制策略的理论分析以及实用性。Traditional arc striking strategy for air plasma cutting machine is current closed-loop control,which results in the power level of arc resistance is high and need to sample the current of guiding arc in real time. The paper details a modified arc striking strategy to increase the current of guiding arc linearly without sampling it,and decrease the power level of arc resistance greatly on the basis of guaranteeing the success rate of arc striking,and decrease the number of current sensor,which reduce the cost of the machine and adjust the strength of guiding arc flexibility. Experimental results demonstrate the theoretical analysis and practicality of the modified arc striking strategy.

关 键 词：空气等离子切割机 引弧控制策略 引导弧 切割弧 

分 类 号：TG483[金属学及工艺—焊接]