氩弧焊机控制系统的抗干扰研究

随着单片机在工业生产中的广泛应用,对其可靠性要求也越来越高。由于单片机控制系统必须具有较高的灵敏度,因此抗干扰技术己成为的单片机控制系统设计时必须考虑的环节。分析了氩弧焊接机床的单片机控制系统干扰的主要来源,从硬件（主动式抗干扰）和软件（被动式抗干扰）两个方而进行了抗干扰设计,得到了在复杂工作环境条件下稳定地、可靠地运行单片机实时控制系统,解决了强电磁环境对单片机系统的干扰难题。

The Anti-interfence Research of the system of TIG Control

With the SCM（Single-chip microcomputer） widely applied in the industrial manufacturing,there is a higher demand for the reliability of SCM.High sensitivity plays an indispensable role in SCM system.Thus,anti-interference technology has become an indispensable consideration in SCM system design.This paper analyzes the main sources of the interference in SCM system of arc welding machine and elaborates on the anti-interference design in two aspects respectively,one is hardware（active anti-interference） and the other is software（passive anti-interference）.In this way,a more reliable SCM real-time control system is achieved for steady work in the complex working circumstances and the interference puzzle of SCM system caused by intensive electromagnetic circumstances is also settled.