Design Of Welding Control System For Automobile Front And Rear Beam Based On PROFINET

With the "Industrial 4.0" era,the industry will further shift from the past centralized control mode to the distributed control mode,and the simple fieldbus technology has been unable to meet the needs of the current automotive front and rear beam welding control systems.In this context,the more advanced technology PROFINET Industrial Ethernet came into being,it can meet all the requirements of today's automotive welding control,so that the control system more automated,networking and information technology.In this thesis,PROFINET Industrial Ethernet in the field of automotive welding control applications for the research direction,the traditional automotive front and rear beam welding control is generally divided into fixture control and welding control two different control systems proposed a solution,try through the latest PROFINET technology make the fixture control and torch control are integrated into a control system in a distributed control manner.Using Siemens S7-300 PLC as the system of the next crew operating station,HMI device as the system of the host computer monitoring station,with PROFINET will be the latest PLC technology and HMI equipment combined with the creative design of the field can be debug PID control welding gun method.Through the field debugging control parameters,can provide the best welding solution for different welding targets,solve the PLC and A / D sampling rate of the PLC limit the advanced control algorithm can not fully meet the fast,high precision,wide range of welding problems The And in the car replacement speed,you can adjust the parameters through the field so that the welding system for more models.