Research Of Welding Demonstration Control Software Based On STM32

The paper combined with the hot research point welding robots domestic and overseas, designed a welding robot controller based on button input, design the welding car XYZR four degrees of freedom rectangular coordinate as welding robot actuators. Through the pressed key input control signals to control system, Then the STM32 processing corresponding key-press events, MCU send PWM pulse square wave output to the stepper motor, stepper motor motion through the transmission device into the corresponding X, Y, Z axial linear motion.The research emphasis of this paper is how to input by manual buttons control the welding car movement, each key to define different functions, controller can control the welding car xyz axis forward or backward;use the appropriate interpolation algorithm,and through theoretical analysis and deduction,finally transform algorithm into program code, and can realize welding carriage linear interpolation arc interpolation, complex curve interpolation. Design good human-computer interaction interface,according to the different welding material and welding performance requirements, it can preset welding parameters such as welding voltage, welding current and welding speed,and display real-time welding car motion state,adjust the welding speed.This topic research content is as follows。The hardware circuit board with STM32 as the core components. Vibration control circuit including power supply circuit, the external crystal circuit, liquid crystal display, 4 ×4 matrix keyboard, AD data signal collection circuit, alarm information indicator module, SD card storage module. Peripheral hardware also includes stepper motor, stepper motor drives, four degrees of freedom welding carriage and other hardware equipment.Modular programming ideas to write code, To subdivide the main program, modular,including key scan program, pulse output, capture pulse counting procedures, motion control algorithm procedures, welding teaching procedures, LCD display, parameter preset program, limit alarm information program.Through the hardware-in-the-loop simulation test platform, including axis motion control experiment, the simulation of weld path teaching experiment, the successful implementation of the manual button control of welding carriage, teaching of complicated weld mark. The experimental results show that the control system simple operation, good stability, good human-computer interaction function.Finally summarise content in this paper,and put forward the future research direction.