摘要
针对GMAW-P焊的脉冲波形调制,采用16位定点数字信号处理器TMS320LF2407A建立了基于DSP的GMAW-P焊数字化控制系统。利用DSP内部集成的PWM产生模块,通过选择合适的工作方式实现了PWM信号的直接数字化控制,从而实现了GMAW-P焊高频逆变和低频脉冲波形调制,提高了控制系统的工作稳定性和可靠性,阐述了控制系统的软件设计。结果表明,所设计的数字化控制系统能实现良好的GMAW-P焊接工艺,焊接过程稳定,获得的焊缝质量好,成形美观,充分显示了DSP数字化控制的优点。
For the pulsed waveform modulation of GMAW-P(gas metal arc welding-pulsed arc), a novel DSP based digital control system for GMAW-P was presented, which was established based on 16-bit fixed point digital signal processor(DSP) TMS320LF2407A. By adopting the PWM generation modules integrated in DSP and selecting their reasonable working mode, the digital control of PWM signal was realized, so the high frequency inverter and low frequency pulsed waveform modulation of GMAW-P were realized, and the stability and reliability of control system were improved. The design of software to the control system was also discussed. Experimental results show that the developed digital control system has the ability to accomplish the excellent welding process and appearance of the weld is good, the merit of DSP based digital control system is fully demonstrated.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2007年第11期41-44,共4页
Transactions of The China Welding Institution
基金
中国博士后科学基金资助项目(20060400745)
国家自然科学基金资助项目(50375054)
