铝合金脉冲MIG焊焊丝伸出长度视觉检测控制  

Vision sensing and control for wire extension in pulsed MIG welding of aluminum alloy

作　　者：卢立晖[1] 石玙 黄健康[1] 樊佳伟[1] 樊丁[2] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料重点实验室,兰州730050 [2]兰州理工大学有色金属合金及加工教育部重点实验室,兰州730050

出　　处：《焊接学报》2011年第7期63-66,116,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(50805073);兰州理工大学优秀青年教师培养计划(Q200901);甘肃省教育厅基金资助项目(0803-02)

摘　　要：针对铝合金脉冲MIG焊过程焊丝伸出长度的视觉控制进行了研究.设计了基于视觉传感的焊丝伸出长度模糊PID闭环控制系统,采用基于xPC的实时目标环境,建立了铝合金脉冲MIG焊快速原型的控制平台,并进行了铝合金脉冲MIG焊焊丝伸出长度视觉控制试验.结果表明,在铝合金脉冲MIG焊过程中,视觉传感的方法能够满足焊丝伸出长度稳定性的控制,且利用模糊PID控制器建立的快速原型视觉传感控制系统可以实现铝合金脉冲MIG焊丝伸出长度的良好控制,具有较强的鲁棒性和快速响应能力.Research work of wire extension control based on vision sensing was done in pulsed MIG welding process of aluminum alloy.A rapid prototyping control platform was established for pulsed MIG welding of aluminum alloy using real-time target environment based on xPC.With vision sensing of welding zone image and corresponding image processing algorithm,a fuzzy PID closed loop control system for wire extension was designed on the basis of the built rapid prototyping control platform.Then experimental results show that the method of vision sensing can meet the control requirements of wire extension stability,the rapid prototyping control system built with fuzzy PID controller based on vision sensing can realize the well control of the wire extension in pulsed MIG welding of aluminum alloy and also has strong robustness and quick response ability.

关 键 词：焊丝伸出长度控制 视觉传感 模糊PID 脉冲MIG焊 

分 类 号：TG409[金属学及工艺—焊接]