波控逆变式精密回流焊接电源的研制

基金项目: 广东省科技攻关项目(2005B10201008)

Development of precise inverter reflow-soldering power supply with waveform control

Department of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China

摘要: 回流焊是一种对电子元器件实现精密连接的焊接方法.为实现对回流焊接过程的精确控制,逆变电源控制系统以微处理器PIC18F6585作为控制系统核心,通过热电偶的闭环在线反馈,实现对焊接温度的实时控制.控制程序采用C语言嵌套汇编语言编写,通过分阶段电流波形控制和数字PI算法调节,实现对焊接过程的精确控制.结果表明,该电源控制系统能够精确地控制焊接压力、时间和温度等参数,在表面安装技术领域,优势明显。
- 回流焊 /
- 逆变电源 /
- 热电偶 /
- 波控
Abstract: Reflow-soldering is a sophisticated welding method on the electronic components.For precisely controlling the reflow-soldering,the control system adopts PIC18F6585 as the control core and the closed-loop feedback through thermocouple as to control the welding temperature.The language of the control system is written with C language and assembly language.Through the waveform control of different stage and the digital PI algorithm regulation,the power supply achieves precise control of the welding process.Experimental results validate that the control system of the power supply can accurately control the welding pressure,time and temperature,and has obvious advantages in the surface mount technology field.
- reflow soldering /
- inverter power supply /
- thermocouple /
- waveform control

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