摘要
为提高电力电站冷凝器钛合金管板接头环形焊缝的焊接质量,研制了一种数字化、可视化以及自动化的管板焊机.为提高动态响应性能,焊接电源主电路采用了逆变频率为100 kHz的全桥拓扑结构;以基于ARM公司Cortex-M4内核的LM4F232 MCU(微控制器)为核心,设计了焊接过程数字控制系统,开发了基于模糊逻辑判断的参数自整定PI(比例积分)算法,提高了焊机对不同工况的适应性;设计了基于触摸屏和ARM微处理器的人机交互系统,实现了人机交互的数字化和可视化.系统测试以及焊接试验均表明,研制的管板焊机性能优良,能够满足冷凝器钛合金管板优质高效焊接的需求.
To improve the welding quality of circumferential welds of the titanium tube-sheet joint of power plant condenser,an automatic tube-sheet welding system with digital control and visual operation characteristics is developed.The main circuit of welding inverter adopted a frequency of 100 kHz fullbridge topology for improving the dynamic response performance.The digital control system for the welding process is designed based on ARM Cortex-M4,in which the LM4F232 MCU is used as the core element.The parameter self-tuning PI algorithm based on fuzzy logic judge is developed to improve the welding adaptability under different working conditions.The human-computer interactive system based on ARM microprocessor and touch screen is designed,achieving digitalization and visualization of human-computer interaction.System testing and welding experiments show that the developed tube sheet automatic welding machine is with good performance,and can meet the demands of high quality and efficiency welding for the condenser titanium tube sheet joints.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2014年第2期10-14,113,共5页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(E51375173)
广东省科技计划资助项目(2012A032300007
2012B091000009)
关键词
钛合金管板
数字化控制
可视化操作
管板焊机
titanium alloy tube sheet
digital control
visual operation
tube sheet welding machine
作者简介
王振民，男，1974年出生，博士，副教授，机械电子工程系副主任．主要从事现代焊接电源及其过程控制方面的科研和教学工作．发表论文30余篇．Email：wangzhm@scut．edu．cn
