Design And Implementation Of Intermediate Frequency Welder Control System Based On Embedded Technology

With the progress of science and technology and the development of society,intermediate frequency welding technology has become the most commonly used method in the welding industry.Compared with traditional power frequency welding,intermediate frequency inverter DC spot welding has the advantages of high control accuracy,stable output current,low inductance,light welding transformer quality,and less welding spatter.At the same time,with the rapid development of digital information technology and network technology,embedded systems have been widely used in scientific research,engineering practice,military applications and people's daily lives.The embedded system is selected as the core controller of the intermediate frequency welding machine,which can more conveniently control the welding process.Therefore,an intermediate frequency welding machine control system based on embedded technology is designed in this paper.This article is based on the scientific research project of the design and implementation of the intermediate frequency welding machine control system.The STM32F107VCT6 microcontroller is used as the main control chip,and the ?C/OS-III real-time operating system is used to implement the execution and scheduling of each task in the welding process.This article first describes the working principle of the welding machine,the hardware design framework of the welding machine control system and the design framework of the system software.On the software,through the ?C/OS-III real-time operating system,a multi-task modular design is realized for each function in the welding process.The design process of tasks including switch status detection task,welding adjustment task,valve adjustment task,fault diagnosis task,welding process task and other tasks is briefly described.In the control algorithm,the PID control algorithm is used to adjust the duty cycle in the welding process.Comprehensive PID control system simulation and actual welding test determine the optimal control parameters.In the design of the human-computer interaction module,the DWIN display is used to realize human-machine communication,and the development of the DWIN display is further elaborated.Finally,the design of the entire welding machine control system is completed.Finally,on-site welding debugging and testing of the manufactured intermediate frequency welding machine control system are carried out.The entire welding process is performed smoothly.The welding effect is well controlled.The hardware circuit design is reliable.And the spot welding system runs stably.On the whole,it basically met the design requirements.The intermediate frequency welding machine control system designed in this paper has low cost,strong function expandability,and strong commercial application value.It is in line with the current development direction of the welding machine control industry and has a broad market prospect.